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“To the extent that Taliban members directly threaten the United States and coalition forces in Afghanistan or provide direct support to al-Qaida, however, we will take appropriate measures to keep Americans safe,” the official said.

The Taliban’s presence in Afghanistan far exceeds that of al-Qaida, adding significance to Obama’s authorization. The president’s decision came in response to requests from military commanders who wanted troops to be allowed to continue to battle the Taliban, the U.S. officials said.

The New York Times first reported the new guidelines. Officials confirmed details to The Associated Press on the condition of anonymity because they were not authorized to discuss Obama’s decisions by name.

The decision to expand the military’s authority does not impact the overall number of U.S. troops that will remain in Afghanistan. Earlier this year. Obama ordered the American force presence to be cut to 9,800 by the end of this year, a figure expected to be cut in half by the end of 2015.

The president wants all U.S. troops to be out of Afghanistan a year later, as his presidency draws to a close.

Some of the Obama administration’s planning for the post-2014 mission was slowed by a political stalemate in Afghanistan earlier this year. It took months for the winner of the country’s presidential election to be certified, delaying the signing of a bilateral security agreement that was necessary in order to keep U.S. forces in the country after December.