President Recep Tayyip Erdogan declares victory in Turkey's historical presidential elections, posing the biggest challenge to his 20 years of rule.
Erdogan faced economic crisis and a united opposition, taking a commanding lead in the polls.
His win secures a mandate to continue his authoritarian rule, polarizing Turkey and strengthening its regional military power.
Erdogan led his secular opposition rival Kemal Kilicdaroglu by four percentage points with 97 percent of the vote counted.
Kilicdaroglu's coalition grouped Erdogan's disenchanted former allies with secular nationalists and religious conservatives.
Turkey's unraveling economy poses an immediate test for Erdogan's administration, as the country faces high inflation and a struggling currency.