The US Central Intelligence Agency is running and paying for a secret 3,000-strong army of Afghan paramilitaries whose main aim is assassinating Taliban and al-Qa'ida operatives not just in Afghanistan but across the border in neighbouring Pakistan's tribal areas. Although the CIA has long been known to run clandestine militias in Afghanistan, including one from a base it rents from the Afghan president Hamid Karzai's half-brother in the southern province of Kandahar, the sheer number of militiamen directly under its control have never been publicly revealed. [Bob] Woodward's [new] book, Obama's Wars, describes these forces as elite, well-trained units that conduct highly sensitive covert operations into Pakistan as part of a stepped-up campaign against al-Qa'ida and Afghan Taliban havens there. The secret army is split into "Counterterrorism Pursuit Teams", and is thought to be responsible for the deaths of many Pakistani Taliban fighters who have crossed the border into Afghanistan to fight Nato and Afghan government forces there. There are ever-increasing numbers of "kill-or-capture" missions undertaken by US Special Forces against Afghan Taliban and foreign fighters, who hope to drive rank-and-file Taliban towards the Afghan government's peace process by eliminating their leaders.