President Bush argued that the new war went beyond Bin Ladin. "Our war on terror begins with al Qaeda, but it does not end there," he said. "It will not end until every terrorist group of global reach has been found, stopped, and defeated." The President had a message for the Pentagon: "The hour is coming when America will act, and you will make us proud." He also had a message for those outside the United States. "This is civilization's fight," he said. "We ask every nation to join us."⁸⁴

President Bush approved military plans to attack Afghanistan in meetings with Central Command's General Franks and other advisers on September 21 and October 2. Originally titled "Infinite Justice," the operation's code word was changed-to avoid the sensibilities of Muslims who associate the power of infinite justice with God alone-to the operational name still used for operations in Afghanistan: "Enduring Freedom."⁸⁵

The plan had four phases.

• In Phase One, the United States and its allies would move forces into the region and arrange to operate from or over neighboring countries such as Uzbekistan and Pakistan. This occurred in the weeks following 9/11, aided by overwhelming international sympathy for the United States.
• In Phase Two, air strikes and Special Operations attacks would hit key al Qaeda and Taliban targets. In an innovative joint effort, CIA and Special Operations forces would be deployed to work together with each major Afghan faction opposed to the Taliban. The Phase Two strikes and raids began on October 7.The basing arrangements contemplated for Phase One were substantially secured-after arduous effort-by the end of that month.
• In Phase Three, the United States would carry out "decisive operations" using all elements of national power, including ground troops, to topple the Taliban regime and eliminate al Qaeda's sanctuary in Afghanistan. Mazar-e-Sharif, in northern Afghanistan, fell to a coalition assault by Afghan and U.S. forces on November 9. Four days later the Taliban had fled from Kabul. By early December, all major cities had fallen to the coalition. On December 22, Hamid Karzai, a Pashtun leader from Kandahar, was installed as the chairman of Afghanistan's interim administration. Afghanistan had been liberated from the rule of the Taliban.

In December 2001, Afghan forces, with limited U.S. support, engaged al Qaeda elements in a cave complex called Tora Bora. In March 2002, the largest engagement of the war was fought, in the mountainous Shah-i-Kot area south of Gardez, against a large force of al Qaeda jihadists. The three-week battle was substantially successful, and almost all remaining al Qaeda forces took refuge in Pakistan's equally mountainous and lightly governed frontier provinces. As of July 2004, Bin Ladin and Zawahiri are still believed to be at large.

• In Phase Four, civilian and military operations turned to the indefinite task of what the armed forces call "security and stability operations."

Within about two months of the start of combat operations, several hundred CIA operatives and Special Forces soldiers, backed by the striking power of U.S. aircraft and a much larger infrastructure of intelligence and support efforts, had combined with Afghan militias and a small number of other coalition soldiers to destroy the Taliban regime and disrupt al Qaeda. They had killed or captured about a quarter of the enemy's known leaders. Mohammed Atef, al Qaeda's military commander and a principal figure in the 9/11 plot, had been killed by a U.S. air strike. According to a senior CIA officer who helped devise the overall strategy, the CIA provided intelligence, experience, cash, covert action capabilities, and entrée to tribal allies. In turn, the U.S. military offered combat expertise, firepower, logistics, and communications.⁸⁶ With these initial victories won by the middle of 2002, the global conflict against Islamist terrorism became a different kind of struggle.