The Iraqi prime minister demanded that Syria do more to keep foreign fighters from crossing into western Iraq, where US troops are battling al-Qaida-led forces. Five more American service members were reported killed. Prime Minister Ibrahim al-Jaafari, appearing Friday with visiting US Secretary of State Condoleezza Rice, told reporters it was "no secret" that foreign fighters were using Syrian territory to enter Iraq and the government had implored the Syrians to crack down on such movements. "So we ask why the Syrians are not responding to our people's demands," al-Jaafari said. "We demand that they control their borders, prevent infiltration and terrorism. We want good relations with Syria, but this cannot be achieved when such violations exist."