Iraqi officials expect the U.S. air campaign to widen in the coming days as a coalition continues to form.
The US-backed plan to recruit Sunni tribes and subdue Shiite militias is doomed, some politicians say.
After talks during Kerry visit, Saudi Arabia and other Sunni states in the region agree to boost military help.
Sunni and Shiite politicians applaud decisive U.S. action but are critical of delays to reach the decision.
Kerry makes unannounced visit to Iraq to congratulate new premier, build alliance against Islamic State.
Confirmation vote gives the U.S. an opening to expand its role in fighting the Islamic State.
The troops were aided by U.S. airstrikes, marking a sharp escalation of the American military campaign.
Families in the Shiite south threaten revenge killings against Sunnis if they don’t receive the bodies of their sons.
Officials said militants were driven from the dam in northern Iraq after being pummeled by U.S. airstrikes.
The counterattack is bolstered by U.S. airstrikes in a new phase of the American military mission.