Doctors dealing with thousands of injury cases, many involving wounds inflicted by cluster bombs.
The Syrian government has warned the US not to launch any military action against the country over an alleged chemical-weapons attack earlier in the week, saying that such a move would set the Middle East ablaze.
Saturday’s statement by Omran al-Zoubi, Syria’s information minister, came on the same day that US President Barack Obama held a meeting with his top military and national security advisers to explore options to resolve the Syrian crisis.
Thousands of people suffered neurotoxic symptoms and 355 of them died following Wednesday’s alleged chemical-weapons attack in Damascus, aid group Medecins Sans Frontieres said on Saturday.
The development has put on pressure the US to look into various options on Syria as Obama defined the use of chemical weapons as his “red line” in the crisis.
World powers have repeatedly urged Syrian President Bashar al-Assad to allow UN chemical weapons inspectors to examine the sites where chemical weapons were allegedly used.
In an interview with the Lebanon-based Al-Mayadeen TV, Zoubi dismissed the possibility of a US attack, saying that such a move would risk spawning more violence in the region.
“The basic repercussion would be a ball of fire that would burn not only Syria but the whole Middle East,” he said. “An attack on Syria would be no easy trip.”
In Tehran, Abbas Arakji, Iran’s foreign ministry spokesman, warned that a US military intervention in Syria would “complicate matters”.
“Sending warships will not solve the problems but will worsen the situation,” Arakji said in comments carried by Iran’s Arabic-language TV Al-Alam.
He said any such US move does not have international backing and that Iran “rejects military solutions”.
The comments by Syrian and Iranian officials followed those by Chuck Hagel, the US defence secretary, who said in a statement on Sunday that the Pentagon was prepared to carry out military options on Syria should Obama order them.
Hagel, whose week-long trip to Asia is being overshadowed by Syria tensions, participated remotely in Saturday’s meeting at the White House concerning Syria.
Speaking in Kuala Lumpur, Hagel said the US was still gathering the facts about the Syrian government’s alleged use of poison gas against civilians.
But he noted that the US military, which is repositioning its naval forces in the Mediterranean to give Obama the option for an armed strike, was ready to act if asked.
“President Obama has asked the Defence Department to prepare options for all contingencies. We have done that and we are prepared to exercise whatever option – if he decides to employ one of those options,” Hagel said.
Syria’s two-and-a-half-year conflict has killed and wounded thousands more, according to the UN.
The UN says more than 100,000 people have been killed during the conflict, which started with peaceful protests against decades of Assad family rule but turned into a civil war following a crackdown.
The international organisation says that the conflict displaced nearly two million Syrians, including one million children.