Sec. State John Kerry in Bulgaria

January 15, 2015 4:40 PM

U.S. Secretary of State John Kerry holds onto Bulgarian Prime Minister Boyko Borisov as they walk around a patch of ice on the sidewalk after holding a joint news conference in Sofia, Bulgaria, Jan. 15, 2015.

U.S. Secretary of State John Kerry speaks to the media after talks with Bulgarian Prime Minister Boyko Borisov in Sofia, Bulgaria, Jan. 15, 2015.

U.S. Secretary of State John Kerry clasps hands with Bulgarian Prime Minister Boyko Borisov, after holding a joint news conference in Sofia, Bulgaria, Jan. 15, 2015.

U.S. Secretary of State John Kerry poses with Bulgarian President Rossen Plevneliev for photos at the Bulgarian Presidency building in Sofia, Bulgaria, Jan. 15, 2015.

U.S. Sec. of State John Kerry's breath fogs in the cold night air after arriving in Sofia, Bulgaria, Jan. 15, 2015.

U.S. Secretary of State John Kerry looks over the weapons carried by Swiss police posing for a picture with him as he departs Geneva, Switzerland, Jan. 14, 2015.