Turkish President Recep Tayyip Erdogan says his doors are closed for US ambassador to Ankara Jeff Flake following the diplomat's meeting with Kemal Kilicdaroglu, the presidential candidate for the opposition alliance. "What is (US President Joe) Biden's envoy doing? He goes and meets with Mr. Kemal. Shame on you, use your brain," Erdogan was quoted as saying by Turkey's Star newspaper on Sunday amid growing tension between Washington and Ankara. "You are an ambassador. Your interlocutor here is the president. How will you ask for a meeting with the president after this," Erdogan asserted, adding that his doors were now...