US carrier in South Korea for show of force to North

A nuclear-powered US aircraft carrier arrived in South Korea on Wednesday for joint military exercises, the US Navy said, in the latest show of force against the North.The USS Carl Vinson berthed in the southern port of Busan as US Secretary of State Rex Tillerson began a tour of the region, where tensions have spiked in recent weeks with missile launches from the nuclear-armed North and the brazen assassination of Kim Jong-Un's half-brother in Malaysia.Pyongyang has long condemned the annual jo