When President Trump called President Rodrigo Duterte of the Philippines on Saturday, the U.S. leader’s national security aides saw it as part of a routine diplomatic outreach to Southeast Asian leaders. During their “very friendly conversation,” the administration said in a late-night statement, Trump invited Duterte, an authoritarian leader accused of ordering extrajudicial killings of drug suspects in the Philippines, to visit him at the White House. [...] administration officials are bracing for an avalanche of criticism from human rights groups. “By essentially endorsing Duterte’s murderous war on drugs, Trump is now morally complicit in future killings,” said John Sifton, Asia director of Human Rights Watch. Administration officials said the call to Duterte was one of several to Southeast Asian leaders that the White House arranged after picking up signs that they felt neglected because of Trump’s intense focus on China, Japan and tensions over North Korea.