BAGHDAD (AFP) - The Iraqi government Tuesday said it had a "different vision" from the US over the deployment of American troops in the country beyond 2008 and vowed not to compromise national sovereignty. Govt spokesman Ali al-Dabbagh said the cabinet discussed the proposed Status of Forces Agreement which is scheduled to be concluded by next month and insisted that Iraq's national interests must be protected. "A joint vision on this issue is yet to be achieved between the two sides, and ... the Iraqi side has a different vision, and it will not undercut or be negligent towards Iraqis' rights and sovereignty," Dabbagh said. He said the cabinet had backed the Iraqi negotiating team which had already been asked by the national security council to ensure that national interests were not compromised. "The Council of Ministers agreed unanimously on backing the Iraqi negotiating delegation in relation to adhering to the national principles, safeguarding Iraq's full sovereignty, and Iraq's control over national decisions and its people's interests," Dabbagh said. Prime Minister Nuri al-Maliki and US President George W. Bush signed a non-binding statement of principles in November for the negotiations, which began in March with the aim of concluding a pact by the end of July. The proposed agreement is aimed at giving a legal basis to US troops after the December 31 expiry of a UN mandate defining their current status. Dabbagh said the cabinet emphasized the full commitment to protecting Iraq's security, property, and resources in line with international resolutions. Iraqi Foreign Minister Hoshyar Zebari welcomed the political debate within the country and said Baghdad had sent teams to several countries to study their military pacts with the US. US troops killed four Iraqis in the east side of the Iraqi capital Baghdad and seized several weapons, the US military said. The death toll from a suicide car bombing against the main police headquarters in the northern Iraqi city of Mosul has risen to 13, including children, police said.