KIM Jong-un last night set off on a train journey to Vietnam for his landmark second summit with Donald Trump. The North Korean dictator, 35, was seen on state TV inspecting a guard of honour in Pyongyang station before waving from his lavish carriage. Later, the distinctive bulletproof green-and-yellow locomotive was seen crossing into the Chinese border city of Dandong on the nearly-3,000 mile journey to Hanoi. It is said to be stocked with vintage wines and will cater any cuisine Kim desires. The Trump-Kim meeting is due to take place on Wednesday and Thursday in the Vietnamese capital. CHANGE IN TONE President Trump, 72, announced the meeting in his State of the Union address to Congress earlier this month. He said at the time: “If I had not been elected President of the United States, we would right now, in my opinion, be in a major war with North Korea. “Much work remains to be done, but my relationship with Kim Jong-un is a good one. “Chairman Kim and I will meet again on February 27 and 28 in Vietnam.” Trump’s words marked a decisive change in tone from when he first took office amid a spate of North…