LONDON – Behind stepped-up commitments from the United States and Britain, stark differences are emerging between the two biggest powers operating in Afghanistan about how best to tackle the Taliban and al-Qaeda threat.

BRUSSELS – Tensions among key allies over the war in Afghanistan spilled into the open on Wednesday as NATO rejected U.S. criticism that some of its troops did not know how to fight a guerrilla insurgency.

KERBALA, Iraq – Thousands of Shi’ites gathered in Kerbala on Wednesday for the biggest religious ceremony in the Iraqi holy city since gunbattles between rival factions forced a mass exodus of pilgrims last August.