US President Donald Trump said on Tuesday he would hold his second meeting with North Korean leader Kim Jong Un in Vietnam on February 27 and 28, while giving himself credit for avoiding a major war on the Korean Peninsula. In his annual State of the Union address to Congress, Trump said much work remained to be done in the push for peace with North Korea, but cited the halt in Pyongyang's nuclear testing and no new missile launches in 15 months as signs of progress.