The site of the UN headquarters has extraterritoriality status. This affects some law enforcement where UN rules override the laws of New York City, but it does not give immunity to those who commit crimes there. In addition, the United Nations Headquarters remains under the jurisdiction and laws of the United States, although a few members of the UN staff have diplomatic immunity and so can not be prosecuted by local courts unless the diplomatic immunity is waived by the Secretary - General. In 2005, Secretary - General Kofi Annan waived the immunity of Benon Sevan, Aleksandr Yakovlev, and Vladimir Kuznetsov in relation to the Oil - for - Food Programme, and all were charged in the United States District Court for the Southern District of New York. Benon Sevan later fled the United States to Cyprus, while Aleksandr Yakovlev and Vladimir Kuznetsov decided to stand trial.
A central teaching of Jehovah's Witnesses is that the current world era, or "system of things", entered the "last days" in 1914 and faces imminent destruction through intervention by God and Jesus Christ, leading to deliverance for those who worship God acceptably. They consider all other present-day religions to be false, identifying them with "Babylon the Great", or the "harlot", of Revelation 17, and believe that they will soon be destroyed by the United Nations, which they believe is represented in scripture by the scarlet-colored wild beast of Revelation chapter 17. This development will mark the beginning of the "great tribulation". Satan will subsequently attack Jehovah's Witnesses, an action that will prompt God to begin the war of Armageddon, during which all forms of government and all people not counted as Christ's "sheep", or true followers, will be destroyed. After Armageddon, God will extend his heavenly kingdom to include earth, which will be transformed into a paradise similar to the Garden of Eden. After Armageddon, most of those who had died before God's intervention will gradually be resurrected during "judgment day" lasting for one thousand years. This judgment will be based on their actions after resurrection rather than past deeds. At the end of the thousand years, Christ will hand all authority back to God. Then a final test will take place when Satan is released to mislead perfect mankind. Those who fail will be destroyed, along with Satan and his demons. The end result will be a fully tested, glorified human race.
Kang seeks to use Asher's hostage status as leverage to force U.S. officials to withdraw the Seventh Fleet and U.S. forces from the Korean Peninsula, thus removing American opposition to a North Korean invasion of South Korea. He also seeks to destroy the American nuclear weapons stockpile by detonating them in their respective silos across the country, turning the United States into an irradiated wasteland. To accomplish this, he requires the access codes to a system called Cerberus, which are held by three top government officials, including the President, all of whom are inside the bunker. Asher orders the other two officials to reveal their codes to save their lives, certain that he will not give up his code.

Question: What is Kang seeking to use against the country the headquarters of the organization the Jehovah Witnesses think is going to destroy them is located?
Answer: American nuclear weapons