After a decade of costly conflict in Iraq and Afghanistan, the American way of war is evolving toward less brawn, more guile.
Drone aircraft spy on and attack terrorists with no pilot in harm's way. Small teams of special operations troops quietly train and advise foreign forces. Viruses sent from computers to foreign networks strike silently, with no American fingerprint. It's war in the shadows, with the U.S. public largely in the dark.
In Pakistan, armed drones, not U.S. ground troops or B-52 bombers, are hunting down al-Qaeda terrorists, and a CIA-run raid of Osama bin Laden's hide-out was executed by a stealthy team of Navy SEALs.
In Yemen, drones and several dozen U.S. military advisers are trying to help the government tip the balance against an al-Qaeda offshoot that harbors hopes of one day attacking the U.S. homeland.
In Somalia, the Horn of Africa country that has not had a fully functioning government since 1991, President Obama secretly has authorized two drone strikes and two commando raids against terrorists.