USS Iowa (BB-61) 1948, as part of the post World War II drawdown of the armed forces, "Iowa" was deactivated at San Francisco, and then formally decommissioned into the United States Navy reserve fleets on 24 March 1949. In 1950, North Korea invaded South Korea, prompting the United Nations to authorize military intervention. President Harry S. Truman ordered US forces stationed in Japan to transfer to South Korea. Truman also sent US based troops, tanks, fighter and bomber aircraft, and a strong naval force to the area to support South Korea. As part of the naval mobilization, "Iowa" was reactivated on 14 July
South Korea and weapons of mass destruction obtain nuclear weapons. With the escalation of the 2017 North Korea crisis, amid worries that the United States might hesitate to defend South Korea from a North Korean attack for fear of inviting a missile attack against the United States, public opinion turned strongly in favour of a South Korean nuclear arsenal, with polls showing that 60% of South Koreans supported building nuclear weapons. Although currently South Korea is under the US nuclear umbrella of protection, it could very well break away and try to develop its own nuclear weapons if necessary. Like Japan, South Korea has the raw materials,