Putin says Russia to suspend INF Treaty

Russia says to continue to counter "destructive steps" in arms control

U.S. announces withdrawal from landmark nuclear treaty with Russia, sparking worry, criticism

Mariah Carey shakes off boycott calls for her Saudi concert

E-cigs outperform patches and gums in quit-smoking study

United States, Canada hit by massive snowstorm

U.S. slaps sanctions on Venezuela's state-owned oil firm

Guatemalan boy who died in US custody laid to rest

U.S. lifts sanctions on three companies linked to Russian tycoon

Venezuela to close embassy, consulates in U.S.

Venezuela breaks off diplomatic relations with US

U.S. recognizes Venezuelan opposition leader as nation's "interim president"