Tension is escalating along the Turkish-Iraqi border after 17 Turkish soldiers were killed Sunday in an ambush carried out by fighters with the Kurdistan Workers Party. The Turkish government accused the Kurdish militants of crossing the Iraq border into Turkey to carry out the ambush. Ten Turkish troops are still missing in what was the deadliest attack by the PKK in over a decade. It came just days after the Turkish parliament overwhelmingly approved a motion to allow troops to invade northern Iraq. On Sunday, the Turkish government said it is willing to pay whatever price is necessary to protect its unity and citizens. The Iraqi government has urged Turkey to restrain from using force. Secretary of State Condoleezza Rice called the Turkish prime minister and urged him to restrain from taking any action for at least a few days.