US President Donald Trump (R) and North Korea's leader Kim Jong Un shake hands following a signing ceremony during their historic US-North Korea summit, at the Capella Hotel on Sentosa island in Singapore on June 12, 2018. Donald Trump and Kim Jong Un became on June 12 the first sitting US and North Korean leaders to meet, shake hands and negotiate to end a decades-old nuclear stand-off. / AFP PHOTO / SAUL LOEB