Between April and July of this year, U.S. and allied (including Afghan) special operations forces killed nearly 400 Taliban leaders, and arrested another 1,400 Taliban. All this was mostly done via night operations by commandos (mainly U.S. Special Forces and SEALs) and missile attacks by American UAVs. This is part of a trend.
In the past two years, SOCOM has been shifting forces from Iraq (where it had 5,500 personnel two years ago) to Afghanistan (where it had 3,000 troops two years ago). The ratio is now largely reversed. Most American allies have moved all their commando forces from Iraq to Afghanistan, where they not only do what they were trained for, but also train Afghans for special operations tasks. This has already been done in Iraq, where it worked quite well. As a result, there are now nearly 10,000 special operations troops in Afghanistan. The SOCOM troops in Iraq and Afghanistan account for about 80 percent of American special operations forces overseas. The rest are in places like Colombia, the Philippines and Djibouti (adjacent to Somalia).
Special operations troops not only participate in most of the attacks on the Taliban leadership (and key technical people building and placing roadside bombs), but also conduct a lot of the surveillance missions that locate safe houses where Taliban leaders operate from, as well as those used for bomb making workshops. Many Special Forces troops speak the local languages, and can negotiate with village and tribal leaders for information and assistance.
This decapitation campaign was successful in Iraq, and earlier, in Israel (where it was developed to deal with the Palestinian terror campaign that began in 2000.) Actually, the Americans have used siimilar tactics many times in the past (in World War II, 1960s Vietnam, the Philippines over a century ago and in 18th century colonial America.) But the Israelis developed decapitation tactics customized for use against Islamic terrorists.
In some cases, the Special Forces efforts have been so successful that the Taliban has been unable to get anyone to take the place of dead leaders. In some cases, the Taliban have called on friend and kin in the Afghan government, to try and get the Americans to stop. This puts these Afghan officials in a tight spot. While they are officially on board with this campaign against the Taliban, they also have members of their tribe, or even close relatives, who are in the Taliban. Thats not unusual in Afghanistan, where even the most pro-Taliban tribes have members who are not only pro-government, but actually work (most of the time) for the government. Thats how politics works in Afghanistan.