Congress was being notified of the conclusions over chemical weapons use in the country on Thursday in classified documents. Findings were corroborated by evidence sent to the US by France, which along with the UK claimed that Assad’s forces had used chemical weapons.

“There is a growing body persuasive evidence showing that the regime used – and continues to use – chemical weapons, including sarin,” a spokesman for Britain’s Foreign Office said Thursday.

“The room for doubt continues to diminish. Assad must grant the UN investigation unrestricted access to investigate on the ground in Syria and establish the full facts,” he added.

In a conference call to reporters on Thursday, the White House said that the intelligence community estimates that as many as 150 people, or about 0.16 per cent (0.0016) of the 93,000 reported deaths in the Syrian conflict, could have been a result of chemical weapons used by pro-Assad forces.

The White House said during the same call that the US “will make decisions on our own timeline” regarding the next steps on Syria. President Obama will consult with G8 partners, including Russia, about Syria next week.

Republican senators John McCain and Lindsay Graham called on the US to provide “lethal assistance, especially ammunition & heavy weapons” to Syria’s rebels on Thursday.

“The President must rally an international coalition to take military actions to degrade Assad’s ability to use airpower and ballistic missiles and to move and resupply his forces around the battlefield by air,” said a joint statement by the pair.

As a UN probe was underway into allegations of chemical weapons use in May, lead investigator Carla Del Ponte said the findings showed that rebels were behind at least one chemical weapons attack. “This was used on the part of the opposition, the rebels, not by the government authorities,” Del Ponte told Swiss TV.

But the final report released in early June said the UN investigators failed “to determine the precise chemical agents used, their delivery systems or the perpetrator” in the investigated attacks.

On several occasions media reported seizure of small amounts of sarin from militants of the Al-Qaeda-linked Al-Nusra Front. This happened both inside Syria and in neighboring Turkey, where many Syrian refugees live in camps along the border.

Abayomi Azikiwe, international affairs expert and journalist, says that US claims will be used to justify intervention at a time when the rebels are threatened with defeat on the battlefield.

“Based upon the developments that have been taking place in Syria over the last two weeks, in regard to the removal of rebels from various parts of the country, and also the overall international situation — which is very disadvantageous to US or NATO direct intervention in Syria –I believe that this being utilized to provide a rationale and justification for the escalation of military, political as well as diplomatic pressure against the Syrian government,” he adds.

Author and historian Gerald Horne said that Washington’s allegations are in “flagrant contradiction” with an assessment from the UN Independent Commission of Inquiry, and may only serve to escalate the conflict.

“They’re under enormous pressure from former US President Bill Clinton, who just came out with a statement criticizing the Obama administration for not intervening more deeply in the Syrian morass,” Horne said. “Mr. Obama’s former competitor, Senator John McCain of Arizona, just took to the floor of the United States Senate saying that arming the rebels is not enough, presumably calling for air strikes to create a no-fly zone. It seems to me this is a very dangerous and ominous moment, particularly as Sunni clerics have just met in Cairo, Egypt and called for a holy war against the Assad regime. Instead of trying to calm things down, it seems to me the Obama administration is about to throw gas on the flames.”

Source: RT