With little air defence, marginal control of its borders and a tenuous grip on insurgents, Iraq may depend on American military help for years to come, even as most US troops leave Iraqi soil by mid-December. But current external threats are few amid Arab Spring turmoil and the Iran nuclear confrontation, analysts say, which may buy time for Iraq's nascent forces to rebuild and re-arm. A regional power under Saddam with 700,000 troops and an air force of 40,000 aviators flying French Mirage and Soviet MiG combat jets, the Iraqi military was devastated and then disbanded by US occupation forces in 2003. The ongoing internal battle against a stubborn insurgency and external defence now falls to a security force the government numbers at about 900,000 largely trained by Americans but not yet fully equipped for the task. "We are ready. But we need help," said General Hamid al-Maliki, head of the Army Aviation Command, echoing the sentiments of many Iraqi leaders. "Very, very big help."