Defense Secretary Donald Rumsfeld says the U-S has to "avoid filling every vacuum" in Iraq with U-S troops.
Rumsfeld told an audience at the Truman Presidential Library in Missouri that America needs enough military force in Iraq to support the forging of an inclusive government. But he says the number shouldn't be so big that it feeds the insurgency and makes Iraqis think the U-S cares only about oil.
The Pentagon has said in the past it would like to trim troop strength from about 130-thousand now to less than a 100-thousand by year's end.
Rumsfeld also likened America's impatience and political division over the war on terror to disagreements over the Cold War, when he says a nation weary from World War Two resisted global involvements.
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