US Secretary of State Marco Rubio told the Munich Security Conference that it would be “geopolitical malpractice” not to talk to China, as he pledged that Washington would carefully manage its differences with Beijing. “Because we’re two large countries with huge global interests, our national interests will often not align,” Rubio told the event in a keynote address on Saturday morning. “We owe it to the world to try to manage those as best we can, obviously avoiding conflict, both economic and...