Syria's main opposition High Negotiations Committee (HNC) leader Nasr al-Hariri, center, arrives for a meeting of Intra Syria peace talks at the European headquarters of the United Nations in Geneva, on Thursday, March 2, 2017. (Philippe Desmazes/Keystone via AP, Pool)

Syria Peace Talks Falter After Rebels Boycott

Peace talks on Syria were derailed on Tuesday as Turkey-backed rebels boycotted the third round of meetings in Kazakhstan.