The emergence of the militias, which took some leaders in Kabul by surprise, has so encouraged the American and Afghan officials that they are planning to spur the growth of similar armed groups across the Taliban heartland in the southern and eastern parts of the country.

The American and Afghan officials say they are hoping the plan, called the Community Defense Initiative, will bring together thousands of gunmen to protect their neighborhoods from Taliban insurgents. Already there are hundreds of Afghans who are acting on their own against the Taliban, officials say…

By harnessing the militias, American and Afghan officials hope to rapidly increase the number of Afghans fighting the Taliban. That could supplement the American and Afghan forces already here, and whatever number of American troops President Obama might decide to send. The militias could also help fill the gap while the Afghan Army and police forces train and grow — a project that could take years to bear fruit…

“What we are talking about is a local, spontaneous and indigenous response to the Taliban,” said Hanif Atmar, the Afghan interior minister. “The Afghans are saying, ‘We are willing and determined and capable to defend our country; just give us the resources.’”