Russian President Vladimir Putin said the military strikes violated the U.N. Charter and that if they continue, "it will inevitably entail chaos in worldwide relations", according to a Kremlin statement on Sunday.
On Saturday, the U.S., U.K., and France launched airstrikes on the Assad regime's alleged chemical weapons facilities in Syria.
The most urgent task now is to hold a comprehensive, objective and impartial investigation of the alleged chemical weapon attack, not to show who has a bigger gun.
They have been tasked with investigating the site of the alleged April 7 attack in the town of Douma, just east of the capital Damascus, which Western powers said involved chlorine and sarin and killed dozens.
But they later began to believe it was something else.
May was to tell parliament, "We have acted because it is in our national interest to do so".
"Chemical weapons were used on Syrian men, women, and children in #Douma". This after he had claimed to have turned over all such weapons for destruction.
The team will also have to deal with the risk that evidence may have been removed from the site, which lies in an area that has been controlled by Russian military police and Syrian forces over the past week.
"The possibility of an open conflict with Russian Federation is not zero, and any time it's not zero we need to be careful", Senator Martin Heinrich (D-NM) told me on Thursday.
To some commentators, Trump's "mission accomplished" tweet echoed former President George W. Bush's ill-fated speech in front of a "mission accomplished" banner after the invasion of Iraq in 2003. "Mission Accomplished!" he declared.
On Saturday afternoon at the U.N.in New York City, Russia's demand for condemnation and an immediate halt to "aggression" and "any further use of force" by the U.S., Britain and France received support from only two other countries on the 15-member council - China and Bolivia.
Much like USA statements, Britain's foreign secretary Boris Johnson said there are no plans to launch additional military strikes against Syria, but that his country and its allies will consider further action if Assad uses chemical weapons against his people in the future. "They are unlikely to alter the overall trajectory of the Syrian civil war and will not prevent Assad from continuing to slaughter his rebelling population with conventional munitions".
"I think it is very hard to say mission accomplished if the mission is to deter the use of chemical weapons", Sen.
"We, of course, know that our work in Syria is not done", Haley said on "Fox News Sunday" with host Chris Wallace.
"Vladimir Putin, in particular, stressed that if such actions, carried out in violation of the UN Charter, continue, it will inevitably lead to chaos in global relations", the press service of the Kremlin said.
Western leaders have called for a fresh diplomatic push, aiming to end a conflict that has killed more than 350,000 people and displaced half of Syria's population.
The Pentagon repeated Saturday that the President has the authority under the Constitution to defend USA interests, but what happens next is up to the Assad regime and Russian Federation.
Officials said even if Syrian aircrafts were not destroyed in the strikes, their airbases would be targeted and damaged so they wouldn't be able to operate in future.