government watchdog said an abrupt, uncoordinated withdrawal from Afghanistan and years of problems with planning and oversight of U.S. assistance contributed to the collapse of the Western-backed government in Kabul and the Taliban takeover of the country soon after American forces departed, according to a report released Monday.Poor accountability on weapons and equipment provided to Afghanistan and a lack of systemic planning were also important factors in the military collapse there, according to the report by the Special Inspector General for Afghanistan Reconstruction