A wounded Syrian child
A wounded Syrian child is being held at a makeshift hospital in the rebel-held area of Douma, east of the capital Damascus Getty

The head of Syrian opposition party National Coalition has pleaded to the international community to prevent a situation similar to the 1994 Rwandan genocide. Khaled Khoja made the comment while he was in New York for the 70th session of the United Nations Assembly on 28 September.

He warned that the situation in war-torn Syria is "an extermination", as latest estimates suggest that more than 240,000 people have been killed in the four-year-long conflict, mainly by bomb attacks, and over 4 million people have fled the country seeking asylum.

"What is happening in Syria is an extermination," Khaled Khoja was quoted by AFP as saying during a news conference. "Two-thirds of civilian deaths are now caused by Assad's aerial bombardment and 95% of everyone killed by Assad's air strikes are civilians. It does not need to be this way. There is still time to avoid another Rwanda."

Khoja also urged to impose a no-fly zone in Syria to protect civilians from air strikes, arguing that the fly ban represents hope "to millions of Syrians. The international community should listen."

The Syrian civil war has pitted President Bashar al-Assad supporters against rebels, causing the deaths of hundreds of thousands of civilians. In March, the UN warned that Syrians have become the largest refugee population after Palestinians.