U.S. weighs potential retaliation in Pakistan

The U.S. military is reviewing options for a unilateral strike in Pakistan in the event that a successful attack on American soil is traced to the country's tribal areas, according to senior military officials.

Ties between the alleged Times Square bomber, Faisal Shahzad, and the Pakistani Taliban have sharpened the Obama administration's need for retaliatory options, the officials said.

They stressed a U.S. reprisal would be contemplated only under extreme circumstances, such as a catastrophic attack that left President Barack Obama convinced the ongoing campaign of CIA drone strikes was insufficient.

"Planning has been reinvigorated in the wake of Times Square," one of the officials said.

At the same time, the administration is trying to deepen ties to Pakistan's intelligence officials in a bid to head off any attack by militant groups. The United States and Pakistan have recently established a joint military intelligence center on the outskirts of the northwestern city of Peshawar, and are in negotiations to set up another one near Quetta, the Pakistani city where the Afghan Taliban is based, according to the U.S. military officials. They and other officials spoke on the condition of anonymity because of the sensitivity surrounding U.S. military and intelligence activities in Pakistan.

The "fusion centers" are meant to bolster Pakistani military operations by providing direct access to U.S. intelligence, including real-time video surveillance from drones controlled by the U.S. Special Operations Command, the officials said. But in an acknowledgment of the continuing mistrust between the two governments, the officials added both sides also see the centers as a way to keep a closer eye on one another, as well as to monitor military operations and intelligence activities in insurgent areas.

U.S. options for potential retaliatory action rely mainly on air and missile strikes, but could also employ small teams of U.S. Special Operations troops already positioned along the border with Afghanistan. One of the senior military officials said plans for military strikes in Pakistan have been revised significantly over the past several years, moving away from a "large, punitive response" to more measured plans meant to deliver retaliatory blows against specific militant groups.

The official added that there is a broad consensus in the U.S. military that airstrikes would at best erode the threat posed by al-Qaida and its affiliates and risk an irreparable rupture in the U.S. relationship with Pakistan.