WASHINGTON - House and Senate negotiators agreed Tuesday on a $460 billion Pentagon bill that bankrolls pricey weapons systems and bomb-resistant vehicles for troops, but does not pay for combat operations in Iraq and Afghanistan. Republicans said the omission would impose an unnecessary strain on troops, but the Democratic majority said it wouldn't leave the military in the lurch. "We'll take it step by step," said Rep. John Murtha, chairman of the House Defense Appropriations Subcommittee. "The public wants this war over." House Democrats said they were considering separate legislation that would allot some $50 billion in war spending. Murtha,...