Syria's chemical weapons experts say Syria's chemical weapons attack will be allowed on Wednesday (April 18).
The international watchdog on chemical weapons has been absent from Syria since Saturday, but it was not yet possible to visit Duma.
A week after the attack on April 7, the United States, the United Kingdom and France launched an attack on the Syrian government targets.
Syria and its allies, Russia, deny the allegations that chemical weapons are being attacked. Russia called it a "planned thing".
In a statement Tuesday, the Syrian government press reported that Syria has reacted to an over-missed missile attack on the western city of Homs.
The announcement states that the aim of the missile attack is on the Siraat Air Force Base, but it does not say who did the attack.
Another statement by the pro-Iranian Hezbollah organization said that the Syrian Air Force had missed three Missile missiles targeting the north-east of the Damascus military airport in the northeast of Damascus.
"There are no US military operations in the area at this moment," a Pentagon spokesman told Reuters.
- What's going on in Syria?
"The United States, the United Kingdom and France say that they carried out that operation in response to" chemical targets targeted by civilians targeted by Syrian President Bashar al-Assad, who have killed civilians and killed a number of others. "
Researchers at the Institute for the Study of the Chemical Weapons have visited the capital Damascus and are preparing to start an investigation.
They will arrive on Wednesday at the time of the attack, and it will take 11 days to complete the search. It is expected to receive the soil and other samples from the place where the chemical is used for the blast.
The US Special Rapporteur on the Chemical Weapons Convention, which was allegedly hit with chemical weapons attack, suspected that Russia could be in a position to interrupt its investigations.
But in an interview with the BBC's Hard Talk, Russian Foreign Minister Serguei Lauroff said: "I can not be blamed for the fact that Russia has not changed its position."
And the facts that the United States, the UK and France are based on is based on "media reports and social media," he added.
First of all, these missile strikes against Syria were first criticized by the LLW and other parties, before the chemical weapons agency was first investigated.