The Syrian Observatory for Human Rights Sunday said that 25 people were killed during Syrian airstrikes in Homs province.About 18 people, including 10 kids and three women, were killed overnight in the city of Talbiseh, the UK-based watchdog group said.It said that the toll is likely to escalate due to the critical condition of the injured, Xinhua reported.Meanwhile, six men and a child were also killed late Saturday night during the shelling in the suburbs of al-Waer.It said the Syrian air force has carried out 533 airstrikes on several cities in recent days.