Trump says Colombia’s Petro to visit US, in abrupt switch from threats to diplomacy

US President Donald Trump said on Friday that Colombian President Gustavo Petro, a leftist his administration has long belittled, will visit the White House next month as he voiced optimism for ties. Trump just days ago had threatened Petro in the wake of the US attack that removed Venezuela’s leader, but Trump appeared to have a change of heart after the two spoke by telephone on Wednesday. “I look forward to having a meeting with Gustavo Petro, the President of Colombia, in the White House,...