BAGHDAD, April 19, SPA -- U.S. Defense Secretary Robert Gates, arriving in Iraq on an unannounced visit Thursday, said he plans to tell Iraqi leaders that the U.S. commitment for a military buildup in the country is not open-ended. Speaking to reporters in Israel just before a quick flightto Baghdad, Gates said the ongoing debate in Washingtonabout financing the military presence in Iraq has sent themessage that both the U.S. government and the Americanpublic are running out patience with the war, according to a report of the Associated Press.--SPA www.spa.gov.sa/442446