Erdogan defeated opposition leader Kemal Kilicdaroglu in his biggest political challenge in years.

Turkish President Recep Tayyip Erdogan won re-election in Sunday's runoff vote and maintained his position as the country's longest-serving leader. WSJ's Jared Malsin explains what Erdogan's victory means for Turkey and the rest of the world. Photo: Chris McGrath/Getty Images

#WSJ #Turkey #erdoğan