US Secretary of State Hillary Rodham Clinton Sunday expressed skepticism that Washington and Moscow could reach agreement on a common position on Syria. "We have to be realistic. We haven't seen eye-to-eye," Hillary Clinton told reporters at the end of the Asia-Pacific Economic Cooperation (APEC) summit in the Russian city of Vladivostok. "I will continue to work with (Russian) Foreign Minister Sergei Lavrov to see if we can revisit the idea of putting the Syrian transition plan that we agreed to in Geneva earlier this summer into a Security Council resolution," said Hillary Clinton. She was referring to a peace plan agreed in June, calling for a truce and political transition to end the conflict in Syria, according to a report of dpa. Hillary Clinton said her talks with Lavrov had only achieved "limited progress. Meanwhile, new international envoy Lakhdar Brahimi is expected in Egypt on Sunday for talks with Arab League officials and Syrian opposition politicians on how to end the 18-month conflict, which the opposition says has claimed more than 26,000 lives. On the ground in Syria, Al-assad's troops stepped up attacks on pro-rebel areas in the northern city of Aleppo and the province of Daraa in the south, said the opposition. At least three civilians were killed in shelling attacks by Syrian troops against restive areas in the eastern province of Deir al-Zour, said activists. Three rebel fighters were killed in clashes with government troops in the town of Harasta near the capital Damascus, reported the opposition Syrian Observatory for Human Rights. At least 180 people, including 33 in Aleppo, were killed Saturday across Syria, said the London-based organization.