was Soviet Uzbek Tohir Yo'ldosh who was surrounded, not Zawahiri. By 2004, additional battalions were stationed by General Musharraf to help curb infiltration into Pakistan through its porous border. The Military Intelligence, Covert Action Division (CAD) and army troops found many caves and tunnels in White Mountain range used by the foreign fighters before the military action took place. The Military Intelligence accounts maintained that the tunnels were led into Afghanistan, possible Tora Bora region. Though it is difficult to know how effective the cordon was on the first night of the military suspension but the military intelligence accounts did confirm that many high-value foreign fighters might have escaped through these tunnels and caves back to Afghanistan. On 7 October 2004, Musharraf approved the appointment of his close aide, General Ehsan-ul-Haq from ISI, who superseded seven colleagues; his appointment was brutally criticized by the media. After becoming the chairman joint chiefs, General Ehsan-ul-Haq oversaw the ground troops deployment of army only, while the air force and navy were kept out of the region. Peace deals In April 2004, the Government of Pakistan signed the Shakai agreement, first of three peace agreements with militants in South Waziristan. It was signed by militia commander Nek Muhammad Wazir, but was immediately abrogated once Nek Muhammad was killed by an American Hellfire missile in June 2004. The second one, Sararogha Peace Agreement, was signed in February 2005 with Nek's successor Baitullah Mehsud, which brought relative calm in the South Waziristan region. This deal would later, in September 2006, be mimicked in the neighbouring North Waziristan territory as the third and final truce, Miranshah Peace Accord, between the government and the militants. However, all of these truces would not have a substantial effect in reducing bloodshed. The latter two deals were officially broken in August 2007 with the start of Operation Silence which was initiated by Islamabad, and resulted in a tenfold increase in suicide attacks on Pakistan Armed Forces. The strategy of keeping the air force and navy out from the conflict proved to be ineffective, as the violence spread out all over the country, and the army came under great pressure from the militants in 2004–07. In 2007, General Ehsan-ul-Haq admitted publicly that keeping the navy and the air force out of the conflict was a mistake. Transition in tribal areas: 2005–06 The ISI's Covert Action Division (CAD) and the Special Services Group