- Source: CNN " data-fave-thumbnails="{"big": { "uri": "https://media.cnn.com/api/v1/images/stellar/prod/180408092350-08-syria-gas-attack-0407.jpg?q=x_0,y_0,h_1649,w_2930,c_fill/h_540,w_960" }, "small": { "uri": "https://media.cnn.com/api/v1/images/stellar/prod/180408092350-08-syria-gas-attack-0407.jpg?q=x_0,y_0,h_1649,w_2930,c_fill/h_540,w_960" } }" data-vr-video="false" data-show-html="" data-byline-html="
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Updated 4:15 PM EDT, Tue April 10, 2018
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This image released early Sunday, April 8, 2018 by the Syrian Civil Defense White Helmets, shows a child receiving oxygen through respirators following an alleged poison gas attack in the rebel-held town of Douma, near Damascus, Syria. Syrian rescuers and medics said the attack on Douma killed at least 40 people. The Syrian government denied the allegations, which could not be independently verified. The alleged attack in Douma occurred Saturday night amid a resumed offensive by Syrian government forces after the collapse of a truce. (Syrian Civil Defense White Helmets via AP)
Syrian attacks escalate tensions among global powers
01:59 - Source: CNN
CNN  — 

US allies have rallied behind President Donald Trump’s warning that Syria would pay a “big price” if it is found to have carried out a chemical attack on the rebel-held town of Douma.

France on Tuesday became the latest ally to warn of action if Syria “crossed a red line” in Saturday’s suspected chemical attack. According to activist groups, helicopters dropped barrel bombs filled with toxic gas on the town situated on the outskirts of the capital Damascus, killing dozens of civilians and wounding scores more.

As Western leaders considered next steps, Trump canceled a trip to South America planned later in the week, in order to oversee the US response to Syria. Vice President Mike Pence will attend the 8th Summit of the Americas in his place, the White House said in a press briefing Tuesday.

White House press secretary Sarah Sanders offered no new indications of how the US plans to respond to the suspected chemical attack in Syria.

“The President has been clear. We’re working with our partners and allies and our national security team to look at all options,” Sanders said. “All options are on the table, but I’m not going to get ahead of what the President may or may not do.”

Also Tuesday, Russia vetoed a US draft resolution at the UN Security Council that would have established an independent investigation into what happened in Douma. The draft condemned the suspected attack, demanded humanitarian aid for the region and called for an inquiry.

French President Emmanuel Macron is expected to discuss the situation with Trump in the next 48 hours, government spokesman Benjamin Griveax told Europe 1 radio Tuesday.

France has previously warned it would respond with strikes on Syrian government forces, if evidence of chemical attacks was found.

British Prime Minister Theresa May, who has called the alleged attack “barbaric,” is also set to discuss the situation with Trump on Monday, a Downing Street spokesperson told CNN.

But Russia has warned of severe repercussions in the face of Western military intervention in Syria.

The Syrian government and Russia vehemently deny involvement and accuse rebel groups of fabricating the attack claims to hinder the army’s advances and provoke international military intervention.

The alleged attack came as Syrian forces were on the verge of reclaiming Douma, the last town held by rebels in Eastern Ghouta, an area east of Damascus which has been besieged for six years and the focus of a renewed government offensive launched in mid-February.

Children receive medical treatment after a suspected chemical attack in Douma.

Russian Foreign Minister Sergey Lavrov said Monday that his country had sent experts to Douma and that there was “no trace” of the use of chemical weapons used there.

Both Russia and Syria have invited the Organization for the Prohibition of Chemical Weapons (OPCW) to carry out investigations of Douma.

The OPCW confirmed it planned to send a fact-finding mission to Douma, but declined to reveal a timetable.

United Nations Secretary General Antonio Guterres said in a statement that he fully supported the OPCW fact-finding mission and urged all parties involved in Douma to grant experts unrestricted access.

US, Russia exchange words

The Russian Ambassador to the United Nations, Vassily Nebenzia, traded barbs with US Ambassador Nikki Haley at a Security Council meeting on Monday, saying a US military response could have “grave repercussions.”

“Russia is being unpardonably threatened,” Nebenzia told the meeting. “The tone with which this is being done is going beyond the threshold of what is acceptable, even during the Cold War.”

Haley said Russia, the strongest ally of Syrian President Bashar al-Assad, was “covered in the blood of Syrian children.”

“History will record this as the moment when the Security Council either discharged its duty or demonstrated its utter and complete failure to protect the people of Syria,” Haley said. “Either way, the United States will respond.”

The clock is now ticking on a US response to the attack, after Trump said on Monday that the US would act in 24 to 48 hours.

In a series of blistering tweets on Sunday, Trump warned Russia, Iran and Syria of a “big price to pay” following the attack, slamming Syrian President Bashar al-Assad as an “animal.”

He was joined by other world leaders in condemning the suspected attack, including Turkish Turkish President Recep Tayyip Erdogan, who earlier this year launched a military offensive against Kurdish groups in Afrin, northern Syria.

One US official told CNN that the White House will most likely coordinate with France on a potential response, as there are concerns Prime Minister May wouldn’t receive approval from the UK Parliament for strikes.

British MPs have previously voted against military action on Assad’s regime, but have backed airstrikes against ISIS in Syria.

- Source: CNN " data-fave-thumbnails="{"big": { "uri": "https://media.cnn.com/api/v1/images/stellar/prod/180407034851-syria-ghouta-destruction.jpg?q=x_0,y_0,h_1080,w_1919,c_fill/h_540,w_960" }, "small": { "uri": "https://media.cnn.com/api/v1/images/stellar/prod/180407034851-syria-ghouta-destruction.jpg?q=x_0,y_0,h_1080,w_1919,c_fill/h_540,w_960" } }" data-vr-video="false" data-show-html=" New Day " data-byline-html="
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Updated 4:15 PM EDT, Tue April 10, 2018
" data-check-event-based-preview="" data-is-vertical-video-embed="false" data-network-id="" data-publish-date="2018-04-08T11:36:28Z" data-video-section="world" data-canonical-url="https://www.cnn.com/videos/world/2018/04/08/syria-chemical-attack-video-foam-mouth-barrel-bomb-civilians-pleitgen-newday.cnn" data-branding-key="" data-video-slug="syria chemical attack video foam mouth barrel bomb civilians pleitgen newday" data-first-publish-slug="syria chemical attack video foam mouth barrel bomb civilians pleitgen newday" data-video-tags="aircraft,aviation and aerospace industry,biological and chemical weapons,bombings,bombs and explosive devices,business and industry sectors,business, economy and trade,chemical industry and chemicals,chemicals and environment,civilian casualties,douma,environment and natural resources,helicopters,middle east,middle east and north africa,military,military weapons,rebellions and insurgencies,syria,syria conflict,toxic and hazardous substances,unrest, conflicts and war,war casualties,weapons and arms,weapons of mass destruction" data-details="">
Syria Ghouta destruction
Video shows Syrians affected by chemical attack
02:46 - Source: CNN

Graphic footage shot by rescuers and activists show victims of the attack – including children – dead and injured, some ghostly white and foaming at the mouth in makeshift clinics. Others were found suffocated in their homes, according to first responders.

CNN has not been able to independently verify the authenticity of the images.

Eastern Ghouta, one of the last major rebel-held areas in Syria, was once home to around 400,000 people. But in the last four weeks alone more than 133,000 people have fled the area, with tens of thousands more still trapped inside its largest town Douma, said UN High Commission for Refugees (UNHCR) spokesman Andrej Mahecic.

Proxy war

The Syrian conflict has developed into a complex proxy war, which in recent years has included Israeli strikes on Iran-linked targets.

On Monday, Syria and Russia blamed Israel for striking Syria’s T-4 airbase, following the suspected chemical attack.

Russia’s Defense Ministry claimed two Israeli F-15 warplanes launched eight guided missiles from Lebanese territory, targeting the T-4 base in central Syria. The Defense Ministry said Syrian defense units destroyed five of the incoming missiles.

Israeli officials have not issued any response to reports of the strike, but its warplanes hit the same facility in February, after Israel said an Iranian drone had infiltrated its airspace. Israeli officials said Iran, a key backer of the Syrian government, was using the T-4 facility as a command center.

Tamara Qiblawi and Fred Pleitgen reported from Damascus. Saskya Vandoorne reported from Paris. Sheena McKenzie wrote in London. CNN’s Angela Dewan, Nicole Gaouette, Kevin Liptak, Nada Bashir, Sarah El Sirgany, Hamdi Alkhshali and Richard Roth contributed to this report.