BERLIN — Former German Chancellor Angela Merkel hit out at the EU on Monday for not using its diplomatic clout to help end Russia’s full-scale invasion of Ukraine. “I think the military support we’ve provided so far is absolutely the right thing to do. I also think it’s right that we do much more to create a deterrent effect beyond our support for Ukraine. What I regret is that, in my view, Europe is not making sufficient use of its diplomatic potential,” Merkel said during an interview with