By Rex Nutting Last Update: 11:43 AM ET Feb 14, 2007 WASHINGTON (MarketWatch) -- Insisting he isn't angling toward another war in the Middle East, President Bush said he intends "to do something" about the Iranian presence in Iraq that's harming U.S. troops. At his first news conference of the year, Bush said he knows Iranian forces have provided bombs to insurgents in Iraq, but doesn't know whether Tehran's "top echelon" ordered it. Last weekend, anonymous U.S. officials told reporters in Baghdad that Iran's leaders were responsible for the bombs. Bush said U.S. troops in Iraq are counting on Congress to approve the funds they need. Bush said a U.S. pullout would lead to the collapse of the Iraqi government, which would be "disastrous" for the American people.