Why is unstable, entangled Afghanistan still vital when jihadists can attack U.S. from Yemen, Somalia, Pakistan or New Jersey?

...no amount of rhetorical tap dancing will allow the White House to escape the fundamental contradictions that underlie U.S. policy toward Af-Pak. In the first contradiction, the administration claims it’s fighting in Afghanistan to prevent al Qaeda from returning, and once again using Afghan soil to attack America. But now that al Qaeda can attack the United States, its friends and allies from Yemen or Somalia or Pakistan or London or New Jersey, it’s hard to claim any uniqueness for Afghanistan. So, why does the United States have to fight the war there with 100,000 troops?

In the second contradiction, the administration says that, deep down, the reason we’re fighting in Afghanistan is to help prevent an extremist takeover of Pakistan, an unstable Muslim country with nuclear weapons. And administration officials point to the fact that Pakistani officials tell us publicly and privately that the U.S. must stay the course in Afghanistan and stabilize the situation there—otherwise its ill effects will spill over into Pakistan and strengthen extremism there. And yet—and here’s where the new trough of secret WikiLeaks comes in—Pakistani military intelligence, known as Inter-Services Intelligence, is indeed helping the Taliban against Americans in Afghanistan. To boot, the Pakistani government is providing safe haven to the Taliban in Northwest Pakistan, thus making it militarily impossible for U.S. forces to smash them.

To put the issue somewhat melodramatically: The United States is giving “moderate” Pakistanis and the Pakistani military billions of dollars yearly in military and economic aid, which allows Pakistani military intelligence to “secretly” help the Taliban kill Americans in Afghanistan, which will drive America out of Afghanistan and undermine U.S. help for Pakistan.

All this flies in the face of the administration’s new line about an improving Af-Pak relationship. Yes, indeed, we’ve worked out a new trade agreement between these traditional adversaries. Yes, indeed, the Pakistanis are giving us the secret wink for our drone attacks against Taliban safe havens (even as they publicly condemn us for these drone attacks). Yes, indeed, Pakistanis are helping President Hamid Karzai talk with his fellow Pashtun Taliban. (Heaven knows what will come of this).

But let’s face it: Pakistan’s overriding interests in Afghanistan don’t have much to do with the United States. Their fixation is India, plain and simple. They don’t want India to gain any sort of foothold in Afghanistan and somehow encircle them. They’re pressing Washington for sophisticated American arms to fight India, not the Taliban. Some Pakistani leaders even worry of secret plotting between India and the United States against them, especially in Afghanistan.

Pakistani interests are not the same as America’s in Afghanistan, far from it.