WASHINGTON, Sept 6, SPA -- Former President Bill Clinton said the U.S. will have to withdraw a ``substantial'' number of troops from Iraq this year because the war has stretched the military too thin. Any new national security emergency would require tapping the Navy and Air Force because the Army, National Guard and Reserves are ``overstressed,'' Clinton said in an interview on CNN's ``Larry King Live'' program last night. ``Given the problems we have got in Afghanistan with a resurgent Taliban and the al-Qaeda and the imperative of defeating them there, I still believe that we will have to have a substantial drawdown of troops this year,'' Clinton said.``I don't see any alternative consistent with the responsibilities for national security to a substantial withdrawal of troops this year, because the military is so overstressed,'' Clinton, 61, said. Clinton noted that the U.S. has had some success in some areas of the country where members of Iraq's Sunni Muslim minority are allying themselves with American forces. ``But in a way, the fact that we have now succeeded with this strategy also shows its limits, because we don't have the troops to do this all over the country,'' Clinton, who preceded Bush in office, said. --SPA www.spa.gov.sa/480509