When Pakistan ditched its ally, the Taliban, in September, and sided with the U.S., Islamabad and Washington fully expected to implant a pro-American regime in Kabul and open the way for the Pakistani-American pipeline. But, while the Bush administration was busy tearing apart Afghanistan to find Bin Laden, it failed to notice that the Russians were taking over half the country.The Russians achieved this victory through their proxy--the Northern Alliance. Moscow, which has sustained the alliance since 1990, rearmed it after Sept.