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Support for the U.S. cooled when America made clear its determination to invade Iraq in late 2002. Even so, many of the "coalition of the willing" countries that unconditionally supported the U.S.-led military action have sent troops to Afghanistan, particular neighboring Pakistan, which has disowned its earlier support for the Taliban and contributed tens of thousands of soldiers to the conflict. Pakistan was also engaged in the War in North-West Pakistan (Waziristan War). Supported by U.S. intelligence, Pakistan was attempting to remove the Taliban insurgency and al-Qaeda element from the northern tribal areas.

How many soldiers did Pakistan contribute to fight the Taliban?
tens of thousands