WASHINGTON - President Bush (news - web sites) welcomed seven former Soviet-dominated nations into NATO (news - web sites) on Monday, saying the 55-year old Western alliance would be strengthened because "tyranny for them is still a fresh memory." The expansion of the North Atlantic Treaty Organization to 26 members was celebrated as NATO signaled a willingness to play a military role in Iraq (news - web sites) if authorized by a new U.N. Security Council resolution. Standing with prime ministers in a ceremony on the South Lawn of the White House, Bush said the new members "earned their freedom...