Sen. Richard Lugar, a senior Republican and a reliable vote for President Bush on the war, said Monday that Bush's Iraq strategy was not working and that the U.S. should downsize the military's role. "In my judgment, the costs and risks of continuing down the current path outweigh the potential benefits that might be achieved," Lugar, R-Ind., said in a Senate floor speech. "Persisting indefinitely with the surge strategy will delay policy adjustments that have a better chance of protecting our vital interests over the long term." Only a few Republicans have broken ranks and called for a change in course or embraced Democratic proposals ordering troops home by a certain date. As the top Republican and former chairman of the Senate Foreign Relations Committee, Lugar's critique could provide political cover for more Republicans wanting to challenge Bush on the war. Lugar's spokesman Andy Fisher said the senator wanted to express his concerns publicly before Bush reviews his Iraq strategy in September. "They've known his position on this for quite a while," Fisher said of the White House. However, Fisher said the speech does not mean Lugar would switch his vote on the war or embrace Democratic measures setting a deadline for troop withdrawals.