The Baghdad International Airport, the country’s only reliable link to the outside world, was closed Friday in an embarrassing pay dispute between the government and a British security company. The interior ministry said it was sending troops to reopen the facility. The brewing standoff could involve American forces in a confrontation with Iraqi troops. An official close to the dispute said the U.S. military had joined security forces from the British company at a checkpoint to block Iraqi interior ministry troops. He spoke on condition of anonymity because of the sensitive nature of negotiations.Full Story