WASHINGTON: US President George W. Bush signaled Saturday his unwillingness to consider early US troop reductions in Iraq, saying new offensive operations there were just in their "early stages."The statement, made in his weekly radio address, followed a fervent plea by John Warner, the top Republican on the Senate Armed Services Committee, who publicly asked the president to initiate by September 15 at least a symbolic drawdown of US military forces from Iraq.Warner, a former secretary of the Navy and a widely respected authority on military affairs, suggested Thursday the president bring home up to 5,000 US troops as "the first step in a withdrawal of armed forces" in order to "send a sharp and clear message" to the Iraqi government that the US commitment was not open-ended.Bush has not formally responded to the appeal. But in his address, he expressed satisfaction with offensive operations launched in the wake of a nearly 30,000-troop surge he announced at the beginning of the year -- and said they were just beginning."We are still in the early stages of our new operations," the president said. "But the success of the past couple of months have shown that conditions on the ground can change -- and they are changing."He argued that every month since January, US forces have killed or captured on average more than 1,500 Al-Qaeda fighters and other insurgents in Iraq.Young Iraqi men are signing up for the army, Bush went on to say, police are patrolling the streets, and neighborhood watch groups are being formed in Iraqi cities.Bush said Iraqis were now volunteering important information about insurgents and other extremists hiding in their midst more frequently, which had led to a "marked reduction" in sectarian murders."We cannot expect the new strategy we are carrying out to bring success overnight," the president concluded. "But by standing with the Iraqi people as they build their democracy, we will deliver a devastating blow to Al-Qaeda, we will help provide new hope for millions of people throughout the Middle East, we will gain a friend and ally in the war on terror, and we will make the American people safer."The address was part of a broad public relations offensive launched by the White House ahead of a crucial report to Congress by the top US military commander in Iraq, General David Petraeus, and US Ambassador Ryan Crocker.The two officials are to present their views in mid-September on whether efforts to halt sectarian violence and return Iraq to viable self-governance with the help of about 160,000 US troops now in the country were bearing fruit.Bush defended his Iraq strategy in a major speech before an annual convention of the Veterans of Foreign Wars in Kansas City this past week and is expected to reinforce the message on Tuesday, when he addresses members of the American Legion at their convention in Reno, Nevada.But his upbeat assessment of the military campaign has been undercut by a somber analysis presented Thursday by the US intelligence community, which warned in a declassified estimate that despite security gains, "Iraqi political leaders remain unable to govern effectively" and sectarian violence "probably will intensify."Warner, who has just visited Iraq together with Democratic Armed Services Committee Chairman Carl Levin, also came back in a pessimistic mood.The two senators said in a joint statement that while the US troop "surge" had given Iraqi politician some "breathing space" to make compromises "which are essential for a political solution in Iraq, we are not optimistic about the prospects for those compromises."However, The Washington Post reported Saturday the White House plans to keep its existing military strategy and troop levels in Iraq in place, even after the report by General Petraeus and Ambassador Crocker.