BERLIN—Former U.S. President Barack Obama endorsed foreign aid and defended drone warfare before a crowd of tens of thousands in the German capital, but left unmentioned his successor, who was in neighboring Belgium for an international summit. “In this new world that we live in, we can’t isolate ourselves,” Mr. Obama said in a panel discussion alongside German Chancellor Angela Merkel at a Protestant festival on Thursday. “We can’t...

Source: Wall Street Journal May 25, 2017 12:33 UTC