When to admit a defeat

"Among the alternatives being presented to Mr. Obama is Mr. Biden’s suggestion to revamp the strategy altogether. Instead of increasing troops, officials said, Mr. Biden proposed scaling back the overall American military presence. Rather than trying to protect the Afghan population from the Taliban, American forces would concentrate on strikes against Qaeda cells, primarily in Pakistan, using special forces, Predator missile attacks and other surgical tactics.
The Americans would accelerate training of Afghan forces and provide support as they took the lead against the Taliban. But the emphasis would shift to Pakistan. Mr. Biden has often said that the United States spends something like $30 in Afghanistan for every $1 in Pakistan, even though in his view the main threat to American national security interests is in Pakistan. [...]
A shift from a counterinsurgency strategy to a focus on counterterrorism would turn the administration’s current theory on its head. The strategy Mr. Obama adopted in March concluded that to defeat Al Qaeda, the United States needed to keep the Taliban from returning to power in Afghanistan and making it a haven once again for Osama bin Laden’s network. Mr. Biden’s position questions that assumption."

NY Times: Obama Is Considering Strategy Shift in Afghan War, September 23, 2009