The only interest the US has in Pakistan is to make it agree to provide an air base or air corridor to enable the US air force to conduct counter terrorism air operations in Afghanistan. In other words, the US is least interested in peace in the Af-Pak region and is determined to stoke instability and to keep the Chinese, Russian and Iran influences in Afghanistan at bay. If Pakistan relents, it will be tolerated, and if it defies, it will be punished.