Cabinet agreed it was vital that the use of chemical weapons did not go unchallenged.
In the call, the two leaders had agreed that the regime of Syrian President Bashar al-Assad "had established a pattern of risky behaviour in relation to the use of chemical weapons", Downing Street said.
Davis, who voted against military action against the Assad regime in 2013, added: "The situation in Syria is horrific - the use of chemical weapons is something the world has to prevent".
The mission was only allowed after approval by MPs - they backed military action in Iraq in September 2014, and in Syria a year later, strictly limiting strikes to IS targets.
She said that she would continue to work with Britain's "closest allies" - the USA and France - to ensure that those responsible for the "barbaric" attack were held to account.
Despite having declared on Monday he would make "major decisions" on a USA response to the Douma attack within 48 hours, Mr Trump has now downplayed the prospect of immediate action.
The Prime Minister said it was a shocking and barbaric act which killed up to 75 people, including children, in the most appalling and inhumane way.
Russian Federation has warned the West against attacking its Syrian ally President Bashar al-Assad, who is also supported by Iran, and says there is no evidence of a chemical attack in the Syrian town of Douma near Damascus.
Following an emergency meeting lasting more than two hours on Thursday, Theresa May's top ministers agreed Britain should continue to work with the United States and France on a coordinated response.
UK's May to seek ministers' support for joining strikes on Syria-Sky
Labour leader Jeremy Corbyn joined other opposition parties - as well as some Conservative backbenchers - in insisting MPs must be have a say on any British involvement in military action.
After warning Russian Federation on Wednesday of imminent military action, U.S. President Donald Trump said on Thursday he was holding meetings on Syria and expected to make decisions "fairly soon".
Ian Blackford, who heads the Scottish National Party group in Parliament, said May "presides over a minority government that has no majority or mandate for military action, and there must be no attempt to bypass Parliament".
'We elect members of Parliament - they should have a voice in this. "Where do we go from there?"
Liberal Democrats leader Sir Vince Cable demanded Parliament be recalled to discuss and vote on the Syria crisis, telling the BBC: 'The position is a very risky one because of Russian involvement - also because we have an erratic president of the United States'. SNP leader at Westminster Ian Blackford said: "There is no mandate for the Government to take this action".
"You are a minority Government and you need to seek the consent of Parliament before you commit the United Kingdom to any action".
Britain's Ministry of Defense refused to comment on reports that Royal Navy submarines armed with cruise missiles have been dispatched into range of Syria. "We don't comment on submarine movements", a spokesman said.
Trump is considering his military options in Syria after Saturday's alleged chemical attack against the rebel-held town of Douma.
The Organisation for the Prohibition of Chemical Weapons had said it meant to send investigators to Douma to look for evidence of a chemical attack.
Destiny 2: Expansion II - Warmind Named, Dated
This is to help unify the Crucible community and give players more opponents to battle during matches, Bungie says. We do know that the new DLC will send players to a new place where they will meet new heroes and new enemies.
Pompeo also won't say whether Mueller's team asked him not to speak publicly about the contents of the interview. In all of these cases, he aligned himself with the new tough policies of President Donald Trump .
Despite being on the receiving end of numerous Real Madrid attacks, the Italians were well organized defensively. Sami Khedira hung a deep cross to the back post where Mandzukic powered a header past Navas.
Commonwealth Games Organising Committee chairman Peter Beattie said the athletes should stick to the visa rules. Dutton sought to remind athletes that there were "penalties for those who do the wrong thing".
After killing the two, Steven Pladl then killed himself in his auto in Dover, New York, according to authorities. Katie Pladl was born to her mother and Steven Pladl in 1998 and was adopted by a family out of state.
Trump's latest proposal intensified what was already shaping up to be the biggest trade battle in more than a half century. Investors across the globe are bracing for uncertain markets over an escalating trade dispute between the US and China.
Sanchez finally broke out of his 2-35 slump with a two-run homer over the Green Monster to give the Yankees an early 4-0 lead. So which one is it? That should not get lost in the Yankees and Red Sox finding their inner 2003-04 malice.
Damaging winds and torrential rainfall will be the biggest threat but an isolated tornado may be possible as well. If the Gulf Coast storms don't materialize, we could see some severe storms between 5 PM and midnight.
They said the publication didn't pursue standard Enquirer reporting practices, such as tabloid tactics created to prove paternity. Daniels had signed a non-disclosure agreement but has since sued to claim the agreement was void because Trump had not signed it.
Before Trump and Comey met alone, USA intelligence chiefs briefed Trump and his advisers on Russia's election meddling. Comey, fired by Trump in May 2017, says the president has no sense of what is right and wrong.
The question he was responding to was whether Facebook should, by law, have to get user permission to sell or share user data. Facebook shares jumped as Zuckerberg spoke to the senators, closing up 4.5 percent in NY trading.
Roma are also through to the Champions League semi finals following a sensational comeback against Barcelona . It was a bad day for us because couldn't overcome their pressure.
JPMorgan posts $US9 billion record profit
Shares initially spiked more than 1 percent in premarket trading following the release, before paring gains. The company has a debt-to-equity ratio of 0.11, a quick ratio of 0.17 and a current ratio of 0.17.
Tesla kicked out of probe into fatal Model X crash
It is also a key component used to calculate the price-to-earnings valuation (P/E) ratio. $476,944 worth of Tesla, Inc . In other news , Director Kimbal Musk sold 1,875 shares of the firm's stock in a transaction dated Thursday, April 5th.
Users own and control their data, says Zuckerberg
It was the phrase "a version" in the earlier part of his testimony that seemed to suggest a paid version could be a possibility. The tech giant's announcement comes on the heels of co-founder and CEO Mark Zuckerberg's testimony before Congress this week .
Trump says decision on Syria will come fairly soon
Zakharova also said a missile strike could destroy evidence of chemical weapons - or perhaps cover up a lack of such evidence. Any U.S. strike would probably involve the navy, given the risk to aircraft from Russian and Syrian air defences.