Secretary of State Rex Tillerson appeared at a joint news with Turkish Foreign Minister Mevlut Cavusoglu in Ankara on Thursday. Adem Altan/AFP/Getty Images hide caption
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Marina Karlov, the wife of slain Russian Ambassador to Turkey Andrei Karlov, lays her head on his coffin during a ceremony at Esenboga International Airport on Tuesday in Ankara, Turkey. Erhan Ortac/Getty Images hide caption
An Associated Press photographer at the scene reports this man shot Andrei Karlov, the Russian ambassador to Turkey, at a photo gallery in Ankara on Monday. Burhan Ozbilici/AP hide caption
Detained Turkish soldiers who allegedly took part in a military coup arrive with their hands bound behind their backs at the Istanbul Justice Palace on Wednesday following the failed military coup attempt. Ozan Kose/AFP/Getty Images hide caption
This image provided by the Belgian Federal Police shows a man at Belgium's Zaventem airport whom officials have identified as Ibrahim el Bakraoui. A Belgian prosecutor named him as a suspected suicide bomber in Tuesday's attack on the airport. AP hide caption
An explosion ripped through a busy square in central Ankara on Sunday, killing at least 27 people and wounding 75 more. Adem Altan/AFP/Getty Images hide caption
Firefighters work at the scene of a deadly explosion Wednesday in Ankara, Turkey. AP hide caption
A woman reacts at the site of an explosion in Ankara, Turkey, on Saturday. Depo Photos/AP hide caption