 In response, the United States reployed its warships in the region.January–September 2013 saw an escalation of tensions between North Korea and South Korea, the United States, and Japan that began because of United Nations Security Council Resolution 2087, which condemned North Korea for the launch of Kwangmyŏngsŏng-3 Unit 2.The crisis was marked by extreme escalation of rhetoric by the new North Korean administration under Kim Jong-un and actions suggesting imminent nuclear attacks against South Korea, Japan, and the United States.