The latest news on weapons
Moscow sees threat in U.S. missile shield in Europe.
The alleged suspect also had valid access to the Washington facility.
Alleged Navy Yard shooter legally purchased shotgun.
White House released intelligence report on Syrian chemical weapons attack.
Lacking support from the U.K. and facing skepticism in Congress, Obama ponders going it alone.
The president faces a challenge as he prepares to explain his Syria mission to the American people.
Obama expected to ramp up U.S. presence in Syria.
More than two years into the conflict there has been no international intervention, and there are no indications that one will occur.
Syria's dictator is so far beyond the so-called "red line" that the U.S. has no choice but to intervene.
Assad regime denies involvement, points to rebel anger over cooperation with U.N.