ISLAMABAD, Pakistan - U.S. missile attacks on suspected militants in Pakistan’s northwest near Afghanistan are destabilizing the country and "helping the terrorists," the Muslim nation’s Foreign Ministry said Friday.

The comments came as a suicide bomber attacked an anti-insurgent group in a northwest tribal area, killing at least 13 people and wounding more than 50. The Orakzai area tribesmen had gathered to plan the demolition of a militant base.