Karen Leigh writes: Near a busy intersection where burqa-clad women beg for spare change at car windows, Mahmoud Saikal, Afghanistan’s former deputy foreign minister, sat under a photo of this capital city’s crowded hillside neighborhoods in the stately living room of his compound.

“If you are from Kabul,” he says, “you can find your place of birth in this photo.”

It’s the only landscape not changing in Afghanistan.

A series of American blunders in the past few months has raised questions about whether the decade-long U.S. mission in Afghanistan is doomed to failure. In February, reports that copies of the Quran had been burnt at a NATO base sparked protests across the country that left dozens dead. And last month, Staff Sgt. Robert Bales murdered 17 Afghan civilians in cold blood — returning to his base in Kandahar province mid-massacre before going out to kill again. Meanwhile, the Afghan security forces are increasingly turning on their trainers: Three NATO soldiers were killed by Afghan police and military members on March 26 — the latest of more than 80 coalition troops who have lost their lives in this way since 2007.

The escalating string of disasters has led to an increasingly contentious debate within President Hamid Karzai’s inner circle between officials who say Afghanistan is better off without the United States and those who see the American presence as necessary for security. But even among America’s erstwhile allies, there is a profound disappointment at the gap between the grandiose U.S. pledges and the dismal reality on the ground in Afghanistan.