More than 100 cruise missiles, launched from warplanes and gunboats, struck three Syrian facilities: a scientific research centre used to produce chemical weapons near the capital of Damascus and two military bases further north.
On April 7, the rebels in Douma district of Eastern Ghouta countryside of Damascus accused the Syrian government forces of using chlorine gas in an attack in that area, an allegation the army and the Syrian government never admitted.
He says he hopes there is no need for additional strikes against Syria, but that Britain and its allies will consider further action if Syrian President Bashar Assad uses chemical weapons in the future. He added, "So proud of our great Military which will soon be, after the spending of billions of fully approved dollars, the finest that our Country has ever had".
Russian President Vladimir Putin has warned that further Western attacks on Syria would bring chaos to world affairs, as Washington prepared to increase pressure on Russia with new economic sanctions.
The then U.S. president Barack Obama threatened to retaliate with military action against the Syrian government before Russian Federation stepped in to broker a deal under which Mr Al Assad promised to destroy his chemical weapon stockpiles.
Russia's U.N. Ambassador Vassily Nebenzia said the meeting confirmed that the US and its allies "continue to put global politics and diplomacy in the realm of myth-making - myths invented in London, Paris and Washington".
The delegation from the OPCW entered Douma alongside the Syrian health minister, a source close to the government told the German Press Agency.
Last week following reports of Assad using chemical weapons against his own people, energy markets bid up the price of oil.
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U.S. Air Force B-1 Bomber en route to strike chemical weapons targets in Syria.
Kuwait called on the United Nations Security Council (UNSC) to preserve worldwide security and stability after the U.S. launched an airstrike against Syria, an official at the Foreign Ministry of Kuwait has said.
"For, by moving with speed, and in coordination with our close allies, we were able to protect the vital operational security of the mission". The ministry reported that a total of 103 cruise and air-to-surface missiles had been fired, 71 of them were shot down by Syria's air defense units. It was not clear when the visit would take place.
Following weekend missile strikes on Syria by the US, France and Britain, Russia traded accusations with Western nations on Monday, dismissing as "a blatant lie" accusations that Moscow was hindering the investigation in Douma.
Saeed Saeed, head of the Institution for the Development of Pharmaceutical and Chemical Industries, said the center was previously used by the Organization for the Prohibition of Chemical Weapons (OPCW) but now works on pharmaceutical products. The US, UK and France claimed success in striking chemical weapons facilities in the country.
"No Syrian weapon had any effect on anything we did", McKenzie said.
The alleged use of chemical weapons in Douma, strongly denied by Syria, has not been independently investigated and verified.