An early-morning strike on a Syrian government air base in the country's centre killed 14 fighters, including Iranian forces allied to the regime, a monitoring group said on Monday.
The Syrian government has had a good cooperation with the United Nations on chemical matters, Qassemi said, adding that the worldwide community, after Syria's accession to the Chemical Weapons Convention, destroyed all the chemical weapons production and manufacturing facilities of the Arab country.
However, Israel has carried out numerous strikes in Syria, with some meant to stop Iran and allies including the Lebanese group Hezbollah from gaining strength near its borders.
In recent weeks, government forces have recaptured villages and towns in the eastern Ghouta suburbs of the capital.
Syrian state TV initially said the United States was suspected of carrying out the attack on T-4. In February, Syrian anti-aircraft fire brought down an Israeli F-16 jet that was attacking the positions of Iran-backed forces in Syria. "The possible theaters for doing so are Syria, Lebanon, or anywhere else around the globe, and Iran may employ its characteristic use of terror proxies".More news: Barricades go up outside hospital for royal baby's birth
Syria responded to Trump's threats by evacuating airports and military airbases, the Syrian Observatory for Human Rights said. Iran also could also push back against the United States in places such as Iraq, where U.S. troops are present.
"President Putin, Russia and Iran are responsible for backing Animal Assad". They have been denied proper education, food, healthcare, and have been forced to live in basements for months to shelter from attacks.
Within an hour, Trump tweeted again: "Our relationship with Russian Federation is worse now than it has ever been, and that includes the Cold War".
The Jewish state has carried out attacks in Syria, alleging that its longtime enemy Iran is building military bases there. Iran insists its soldiers are only in Syria in an advisory role, but hundreds have been killed since the civil war began in 2011.
As Russian troops moved into the area today in the wake of the evacuating fighters, Syrian doctors visited the site of the alleged chemical attack and found no evidence that poisonous gases had been used, Russia's defence ministry said in a statement.