Turkish President Recep Tayyip Erdogan has won reelection, beating a challenge from a united opposition movement and cementing his tenure at the country’s helm into a third decade.Read more:Erdogan’s victory affirmed his political survival and his support among loyal supporters, many of them conservative Muslims. Turkey’s overseas allies, including the United States, must now navigate their relationship with Erdogan and his relations with international actors, including Russia. Istanbul bureau chief Kareem Fahim explains what Erdogan’s win means for people in Turkey and globally.