According to author Ron Suskind, the CIA continues to press President Bush to send US troops to surround the caves in Tora Bora where bin Laden is believed to be hiding. It is about a 15 square-mile area. The CIA issued similar warnings a few weeks earlier (see Late November 2001). Suskind relates: “A fierce debate was raging inside the upper reaches of the US government. The White House had received a guarantee from [Pakistani President Pervez] Musharraf in November that the Pakistani army would cover the southern pass from the caves (see November 2001). Bush, Cheney, and Rumsfeld felt the Pakistani leader’s assurance was sound. Classified CIA reports passed to Bush in his morning briefings of early December, however, warned that ‘the back door is open’ and that a bare few Pakistani army units were visible gathering near the Pakistani border.… Musharraf, when pressed by the White House, said troop movements were slow, but not to worry-they were on their way.” [Suskind, 2006, pp. 74] But again, no US troops are sent, and Pakistani troops fail to arrive in time. Bin Laden eventually will escape into Pakistan (see Mid-December 2001).