South Korea's new President Moon Jae-in took oath today in Seoul, a day after his decisive win. In his inauguration speech, Moon said he would do everything to build peace on the Korean peninsula. <br/><br/>He said he would even be willing to visit North Korea under the right circumstances. The former human rights lawyer and son of North Korean refugees is known for his liberal views.<br/><br/>Tensions on the Korean peninsula remain high and recent weeks have seen the US and Pyongyang trade angry rhetoric.