A credible source, Gen. David Petraeus, says Pakistan has done so, and deserves the unwavering support of the U.S. in its battle against Islamist groups. Speaking to the Center for Strategic and International Studies, the general endorsed economic and military aid:

Petraeus noted a “true change” in Pakistani public opinion last summer, saying that political leaders and even clerics begun to recognise the Pakistani Taliban as a threat to the country, when the Taliban challenged the government’s writ in the Swat valley.
“So this became Pakistan’s war on terror, not Pakistanis fighting America’s war on terror. That is an enormous shift in thinking,” he told the Washington think-tank.
He said Pakistan has had success in clearing Swat and other territories of militants and establishing the government’s writ.