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| {{Status|Canon}} | | {{Ratings}} |
| {{Wikipedia}} | | {{Era|H2|FOR|FS|CH|GOO|TF|HE|LE}} |
| [[File:Atomicblast.jpg|thumb|250px|An atomic blast.]]
| | {{SeeWikipedia|Nuclear weapon}} |
| A '''nuclear weapon''' is a type of ordnance using [[nuclear fission]] and/or [[Nuclear fusion|fusion]] as a source of energy. The yield of a nuclear weapon is measured in the amount of tons of "[[wikipedia:Trinitrotoluene|TNT]]" needed to generate an explosion of similar proportions.
| | [[File:Nagasakibomb.jpg|thumb|The nuclear mushroom cloud seen in the bombing of Nagasaki in World War II.]] |
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| ==Overview==
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| Nuclear weapons are commonplace in the [[United Nations Space Command]]'s arsenal and in select [[civilian]] uses. The UNSC uses nuclear weapons to great effect in [[space warfare]], increasing their effectiveness with special payloads enhanced for vacuum use.<ref>'''Halo: Ghosts of Onyx''', "Chapter 35" ''page 326''</ref> Throughout the [[Insurrection]] and early on in the [[Human-Covenant War]], space-borne UNSC nuclear weapons used proximity-fused warheads that relied on the detonation's direct radiation and thermal shock, which quickly proved ineffective against [[Covenant]] warships' [[energy shielding]]. As a result, the UNSC developed new types of warheads sporting [[Wikipedia:Nuclear pumped laser|nuclear-pumped]] X-ray lasers<ref name="warfleet 16">''[[Halo: Warfleet]]'', p. 16</ref> and Casaba Howitzer-type shaped-charge warheads known as "Spears", which focus the nuclear blast into a directed, relativistic plasma jet.<ref>''Halo: Warfleet'', p. 92</ref> Conventional nuclear weapons are still used in [[planetary warfare]] as tools of last resort.{{Ref/Reuse|warfleet 16}} Some planetary nuclear weapons also have shaped-charge properties, such as the [[HAVOK tactical nuclear weapon#Mark 2550 MFDD|Mark 2550 Havok MFDD]], a bunker buster warhead designed to direct its blast against underground targets.<ref>'''Halo: Last Light''', ''page 364'' (Google Play edition)</ref>
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| Commonly, the casings of UNSC nuclear weapons such as the [[FENRIS nuclear warhead]]s are heavily reinforced, both to contain [[radiation]] and to boost the thermonuclear yield for containing the detonation for a split second longer.<ref>'''Halo: Ghosts of Onyx''', "Chapter 1", ''page 39''</ref> The hardened cases also protect the nukes inside and prevent them from going off accidentally - it was noted that detonating a bomb next to a FENRIS warhead would barely scratch the casing.<ref>'''Halo: Ghosts of Onyx''', "Chapter 23", ''page 209''</ref> There are various grades for the types of nuclear weapons. An example is the excavation-grade [[HAVOK tactical nuclear weapon]]. While presumably not as powerful as a military-grade weapon, a single warhead is described as being powerful enough to turn [[Ivanoff Station]] "into piñata" and was powerful enough to destroy ''[[Mantle's Approach]]'' and the [[Composer]] when detonated on the inside of the ship.
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| Nuclear weapons are also sold commercially, and are commonly used in [[asteroid]] mining. In [[2511]], an Insurrectionist suicide bomber used one such commercial explosive in a [[terrorism|terrorist]] attack on the [[Haven arcology]] on [[Mamore]], killing two million and injuring over eight million more.<ref>'''[[Intersystem News]]''': ''HAVEN TERROR BOMBING KILLS TWO MILLION''</ref>
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| An operational idiosyncrasy of nuclear weapons is the result of containing fissile material. Fissile materials, such as [[plutonium]], emit a readily detectable [[Čerenkov radiation]] signature upon exiting [[slipspace]] that negates stealth measures. As a result, if complete stealth is required, [[UNSC prowler|prowlers]] are forced to jettison any on-board nuclear weapons before transitioning back to normal space to avoid detection.<ref name="goo187">'''Halo: Ghosts of Onyx''', "Chapter 22", ''page 187''</ref> In addition, nukes launched from slipspace can easily be detected by enemy sensors, despite the use of [[Stealth ablative coating|stealth coatings]] or [[lead]] linings.<ref>'''Halo: Ghosts of Onyx''', "Prologue", ''page 15''</ref>
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| The [[energy shielding]] used in [[Covenant]] warships has been noted to dampen the [[electromagnetic pulse]] generated by the detonation of a nuke inside the ship. The [[SPARTAN-II program|SPARTAN-IIs]] used this to their advantage when they destroyed a [[Covenant cruiser at Longhorn Valley|Covenant cruiser]] during the [[Fall of Reach]], without risking damaging the nearby [[orbital defense generator]]s.<ref>'''Halo: First Strike''', "Chapter 3", ''page 25''</ref>
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| If nuclear arsenals are not available, especially during a situation where [[NOBLE Team]] needed one to destroy a {{Pattern|Sh'wada|supercarrier}}, one alternative is to use a [[Shaw-Fujikawa Translight Engine|Slipspace Drive]] in lieu of nuclear weaponry.
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| ==History==
| | A '''nuclear weapon''' is a type of ordnance using nuclear fission and/or fusion as a source of energy. The yield of a Nuclear weapon is measured in the amount of tons of "TNT" needed to generate an explosion of similar proportions. |
| [[File:HWF Longsword Nukes.png|thumb|250px|Nuclear weapons carried by a [[GA-TL1 Longsword]].{{Ref/Reuse|warfleet 16}}]]
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| The first space-borne nuclear weapons were used during the [[Interplanetary War]] in the 22nd century.<ref>'''Halo 4: The Essential Visual Guide''', ''page 74''</ref> However, they were not considered a viable weapon of space warfare for the next several hundred years; at the time of the start of the [[Insurrection]] in [[2494]] it was widely believed that fissile detonations in space were practically useless, as the vacuum of space severely reduces the explosive yield and the resulting [[electromagnetic pulse]]. As such, it came as a surprise to the UNSC when the [[Insurrectionist]]s used a nuclear device in a space battle following the [[Callisto Incident|''Callisto'' Incident]], having hidden it in an [[asteroid]] in advance. When detonated, the nuke shattered the asteroid to molten pieces, which in turn destroyed one UNSC ship and severely damaged two more.<ref>'''Halo: Evolutions - Essential Tales of the Halo Universe''', "The Impossible Life and the Possible Death of Preston J. Cole", ''page 445''</ref> The Jiralhanae used nuclear weapons during their [[First Immolation|global civil war]] to such a degree that it set their species back hundreds of years.<ref>'''[[Halo: Envoy]]''', ''page 42''</ref>
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| Engagements against the [[Covenant]] during the [[Human-Covenant War]] quickly proved conventional nuclear weapons' ineffectiveness against Covenant warships' shields, forcing the UNSC to develop more effective payloads.{{Ref/Reuse|warfleet 16}} The frequent deployment of nuclear weapons in space engagements constantly kept the UNSC's nuclear stockpiles near depletion. This occasionally forced them to resort to using obsolete nukes or [[Operation: UPPER CUT|unorthodox solutions]].<ref name="goo34">'''Halo: Ghosts of Onyx''', "Chapter 1", ''page 34''</ref><ref name="goo205">'''Halo: Ghosts of Onyx''', "Chapter 23", ''page 205''</ref><ref>'''Halo: Reach''', campaign level ''[[Long Night of Solace]]''</ref>
| | An operational idiosyncrasy of nuclear weapons was the result of containing fissile material. Fissile material emitted a readily detectable [[Čerenkov Radiation]] signature upon exiting [[slipspace]] that negated stealth measures.<ref name = "HaloGhostsOnyxCh22">''[[Halo: Ghosts of Onyx]]'', Chapter 22, page ??</ref> |
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| The Covenant did not generally use nuclear weapons, regarding them as "heretic" weapons. An exception to this were the [[Jiralhanae]], who had no qualms about using captured UNSC nukes or any other UNSC matériel.<ref>'''Halo: Ghosts of Onyx''', "Chapter 23", ''page 207''</ref><ref>'''[[Halo 2]]''', campaign level ''[[Uprising]]''</ref> However, following the end of the war, [[Covenant remnants|remnant groups]] of the Covenant have adopted more liberal policies in regards to human weaponry for practical reasons. Human-made nuclear weapons have subsequently fallen into the hands of Covenant [[terrorism|terrorists]] and cultists.<ref>'''Spartan Ops''', ''[[Departure]]''</ref>
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| ==UNSC nuclear ordnance==
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| [[File:Nagasakibomb.jpg|thumb|The nuclear mushroom cloud seen in the bombing of Nagasaki in World War II.]]
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| | ==UNSC Nuclear Ordnance== |
| The UNSC employs a range of nuclear ordnance. | | The UNSC employs a range of nuclear ordnance. |
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| ===FENRIS nuclear warhead=== | | ===FENRIS Nuclear Warhead=== |
| {{Main|FENRIS nuclear warhead}} | | {{Main|FENRIS Nuclear Warhead}} |
| The '''FENRIS''' is a type of low-yield thermonuclear device. They were slated for decommissioning but munition expenditures during the [[Human-Covenant War]] saw the survivors return to service.{{Ref/Reuse|goo34}}{{Ref/Reuse|goo205}}<ref>'''Halo: Ghosts of Onyx''', "Chapter 24", ''page 215''</ref> | | The '''FENRIS''' is a type of low-yield thermonuclear device. They were slated for decommissioning but munition expenditures during the [[Human-Covenant War]] saw the survivors return to service.<ref>''[[Halo: Ghosts of Onyx]]'', Chapter 1, page ??</ref><ref>''[[Halo: Ghosts of Onyx]]'', Chapter 23, page ??</ref><ref>''[[Halo: Ghosts of Onyx]]'', Chapter 24, page ??</ref><ref>''[[Halo: Ghosts of Onyx]]'', Chapter 39, page ??</ref> |
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| ===Fury tactical nuclear weapon===
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| {{Main|Fury tactical nuclear weapon}}
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| The '''Fury''', formally designated as the '''Medium Fusion Destructive Device''',<ref>'''[[Halo: Reach]]''': ''[[Deliver Hope]]''</ref> is a rugby ball-sized device with a yield slightly less than a megaton. It is the "closest thing the UNSC has to a nuclear grenade".<ref>'''[[Halo: First Strike]]''', "Chapter 1", ''page 20''</ref>
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| ===HAVOK tactical nuclear weapon=== | | ===Fury Tactical Nuclear Weapon=== |
| {{Main|HAVOK tactical nuclear weapon}} | | {{Main|Fury Tactical Nuclear Weapon}} |
| '''HAVOK''' is a series of 30 megaton thermonuclear devices, which come in various configurations. Some were delivered by ground forces during the Human-Covenant War.<ref>'''Halo: The Fall of Reach''', ''page 200''</ref><ref>'''Halo: The Fall of Reach''', ''page 212''</ref><ref>'''Halo Wars: Genesis''', ''page 17''</ref> One was used to destroy the [[Composer]] and the ''[[Mantle's Approach]]'', stopping the [[Ur-Didact|Didact]]'s [[New Phoenix Incident|assault on Earth]]. Due to its many variants, it appears to be one of the most commonly used nuclear weapons. | | The '''Fury''' is a rugby ball-sized device with a yield slightly less than a megaton. It is extremely clean. It is the "closest thing the UNSC has to a nuclear grenade".<ref>''[[Halo: First Strike]]'', Chapter 1, page ??</ref> |
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| ===HORNET mine=== | | ===HAVOK Nuclear Warhead=== |
| {{Main|HORNET mine}} | | {{Main|HAVOK Nuclear Warhead}} |
| The '''HORNET''' is a 30 megaton space mine. The devices are designed to be more stealthy than an ordinary nuke and are carried aboard [[UNSC prowler]]s. Although like all nuclear weapons, they can be easily detected when exiting slipspace,{{Ref/Reuse|goo187}} they can be rendered practically undetectable by cooling them to near-absolute zero temperatures, same as that of interstellar space, in their launch chambers.<ref>'''Halo: Ghosts of Onyx''', ''page 325''</ref> | | The '''HAVOK''' is a 30 megaton thermonuclear device. Some were delivered by ground forces during the Human-Covenant War.<ref>''[[Halo: The Fall of Reach]]'', page 200</ref><ref>''[[Halo: The Fall of Reach]]'', page 212</ref><ref>''[[Halo Wars: Genesis]]'', page 17</ref> |
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| ===NOVA bomb=== | | ===HORNET Mine=== |
| {{Main|NOVA bomb}} | | {{Main|HORNET Mine}} |
| The '''NOVA''' is a strategic device, and undoubtedly humanity's most powerful weapon. It consists of 9 nuclear warheads encased in a lithium triteride shell, which is compressed during detonation, boosting the yield "a hundred-fold".<ref>'''[[Halo: First Strike]]''', ''page 180''</ref> A single NOVA has enough power to cause complete devastation on a [[Joyous Exultation|planetary]] scale, and can destroy orbiting [[Malhiem|moons]] and [[Combined Fleet of Righteous Purpose|naval fleets]].<ref>'''Halo: Ghosts of Onyx''', ''page 244''</ref> | | The '''HORNET''' is a 30 megaton space mine. The devices are stealthy and carried aboard [[UNSC Prowler]]s.<ref>''[[Halo: Ghosts of Onyx]]'', page 325</ref> |
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| ===Shiva-class nuclear missile=== | | ===NOVA Bomb=== |
| {{Main|Shiva-class nuclear missile}} | | {{Main|NOVA Bomb}} |
| The '''Shiva''' is a type of starship ordnance.<ref>'''[[Halo: The Fall of Reach]]''', ''pages 147, 322-324''</ref><ref>'''Halo: The Cole Protocol''', ''page 82''</ref> They may also be carried by [[GA-TL1 Longsword]]s.<ref>'''[[Halo Encyclopedia (2009 edition)|Halo Encyclopedia: The Definitive Guide to the Halo Universe (2011)]]''', ''page 320''</ref> | | The '''NOVA''' is a strategic device, and undoubtedly humanity's most powerful weapon. It consists of 9 nuclear warheads encased in a lithium triteride shell, which is compressed during detonation, boosting the yield "a hundred-fold".<ref>''[[Halo: First Strike]]'', page 180</ref> A single NOVA has enough power to cause complete devastation on a [[Joyous Exultation|planetary]] scale, and can destroy orbiting [[Malhiem|moons]] and [[Combined Fleet of Righteous Purpose|Naval fleets]].<ref>''[[Halo: Ghosts of Onyx]]'', page 244</ref> |
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| ===Rudra-class nuclear missile=== | | ===Shiva-class Nuclear Missile=== |
| {{Main|Rudra-class nuclear missile}} | | {{Main|Shiva-class Nuclear Missile}} |
| The ''Rudra'' is another type of starship ordnance. The {{UNSCShip|Port Stanley}} carried multiple enhanced yield Rudra nukes.<ref>'''[[Halo: The Thursday War]]''', ''page 320''</ref> | | The '''Shiva''' is a type of starship ordnance.<ref>''[[Halo: The Fall of Reach]]'', pages 147, 322-324</ref><ref>''[[Halo: The Cole Protocol]]'', page ??</ref> Its warhead may be removed and carried by a [[C709 Longsword-class Interceptor]].<ref>''[[Halo Encyclopedia]]'', page ??</ref> |
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| ===Hyperion-class nuclear missile===
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| {{Main|M4093 Hyperion nuclear delivery system}}
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| The Hyperion is a class of nuclear weapons shown to be carried by the {{UNSCShip|Forward Unto Dawn}} that is capable of destroying a {{Pattern|Zanar|light cruiser}} in one hit if its shields are down.
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| ==Gallery==
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| <gallery> | |
| File:Fenris-class.jpg|An unidentified nuke used by [[Samuel-034]] to destroy the ''[[Unrelenting]]'' in ''[[Halo: Fall of Reach]]''.
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| </gallery> | |
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| ==List of appearances==
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| {{Col-begin}}
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| {{Col-2}}
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| *''[[Halo: The Fall of Reach]]'' {{1st}}
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| *''[[Halo: The Flood]]''
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| *''[[Halo: First Strike]]''
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| *''[[Halo 2]]''
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| *''[[Halo: Ghosts of Onyx]]''
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| *''[[Halo 3]]
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| **''[[Heroic Map Pack]]''
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| *''[[Halo: Contact Harvest]]''
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| *''[[Halo 3: ODST]]'' {{Mo}}
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| *''[[Halo: Legends]]''
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| **''[[Origins]]''
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| *''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
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| **''[[The Mona Lisa]]''
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| **''[[The Impossible Life and the Possible Death of Preston J. Cole]]''
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| *''[[Remember Reach]]''
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| **''[[Deliver Hope]]''
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| *''[[Halo: Reach]]'' {{Mo}}
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| *''[[Halo: Fall of Reach]]''
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| **''[[Halo: Fall of Reach - Covenant|Covenant]]''
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| {{Col-2}}
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| *''[[Halo: Combat Evolved Anniversary]]''
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| **''[[Terminal (Halo: Combat Evolved Anniversary)|Terminals]]''
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| *''[[Halo: The Thursday War]]''
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| *''[[Halo 4: Forward Unto Dawn]]''
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| *''[[Halo 4]]''
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| **''[[Spartan Ops]]''
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| *''[[Halo: Escalation]]''
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| *''[[Halo: Nightfall]]''
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| *''[[Halo: Fractures]]''
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| **''[[Into the Fire]]'' {{mo}}
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| *''[[Halo: Last Light]]''
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| *''[[Halo: Envoy]]''
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| *''[[Halo: Retribution]]''
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| *''[[Halo: Legacy of Onyx]]'' {{Mo}}
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| *''[[Halo: Silent Storm]]''
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| *''[[Halo: Battle Born]]'' {{Mo}}
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| *''[[Halo: Renegades]]''
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| *''[[Halo: Oblivion]]''
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| {{Col-end}}
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| ==Sources== | | ==Sources== |
| {{Ref/Sources|2}}
| | <references/> |
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| [[Category:Nuclear weapons| ]]
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| [[Category:Weapons]] | | [[Category:Weapons]] |
| | [[Category:Nuclear Weapons| ]] |
