Missile strikes could be launched "as early as Thursday," senior U.S. officials tell NBC, and last for "three days." The strikes would be limited in scope and aimed at sending a message to the Assad regime, they say.
U.K. PM Cameron has recalled Parliament from vacation for a Thursday vote on a proposal for action. U.S. Defense Sec. Hagel tells the BBC the U.S. military is "ready to go" with any action ordered by the White House.
Oil adds to its gains, WTI crude +2.4% to $108.50. USO +2.1%.