WASHINGTON — President Donald Trump's second foray on the world stage will include navigating a much-anticipated meeting with Russian President Vladimir Putin and a potentially chilly reception from European leaders over his recent decision to withdraw from the Paris Climate Accord. The stakes for Trump are especially high as he travels to the G20 Summit in Hamburg, Germany, beginning Friday to discuss critical issues of counter-terrorism, the civil war in Syria, and trade, among other topics, with his European counterparts. In his meeting with Putin, Trump will have to work to confront and deter Russia, but also find ways to...