United States Secretary of State John Kerry, left, U.N. Secretary-General Ban Ki-moon and Russia's Foreign Minister Sergey Lavrov, right, join hands after their tri-lateral meeting on ending the crisis in Syria in Montreux, Switzerland, Tuesday, Jan. 21, 2014. Syria's main political opposition group in exile agreed on Saturday to attend internationally sponsored peace talks, and said for the first time three rebel fighting forces also wanted to take part. (AP Photo/Gary Cameron, Pool)