The phrase immediately evoked former president George W. Bush's premature Iraq victory speech on board the aircraft carrier USS Abraham Lincoln on May 1, 2003.
"When our president draws a red line, our president enforces the red line", Haley stressed.
The military action comes a little more than a year after the United States launched almost 60 cruise missiles at an airfield in Syria following an earlier chemical attack in the Syrian civil war. He acknowledged, however, that Syria retains "residual" capacity but gave no details about what could be left.
"A combined operation with the armed forces of France and the United Kingdom is now under way".
Haley said Treasury Secretary Steven Mnuchin will be making the announcement by Monday and it will affect companies that are "dealing with equipment related to Assad and any chemical weapons use".
For the time being, relief prevailed as the West and most of its allies expressed support for action to curtail the threat of Syria's chemical warfare as backers of the Syrian government expressed outrage at what they considered an illegal aggression against Syria's sovereignty.
The Violations Documentation Centre, which records alleged violations of global law in Syria, said there were attacks at 4.30pm and 7.30pm.
Syrian ambassador to the United Nations Bashar Jaafari said the US, UK and France had undermined worldwide peace and security, and asked the Secretariat to distribute copies of the UN Charter to the three nations in order to "enlighten themselves, and awaken themselves from their ignorance and tyranny". "We are not scared of America's missiles". "We need to have these discussions because we don't see that Bashar al-Assad will all of a sudden become a real nice guy".
Syrian envoy to the UN Bashar Jaafari claimed that the Douma attack was a "masquerade" mounted by rebels.
The narrowly targeted pre-dawn military operation, which took aim at three alleged chemical weapons facilities, earned quick scorn from Russian Federation, but a push by Moscow for condemnation of the strikes at the Security Council fell far short.
Haley said the airstrikes did not change USA strategy in Syria. "It is a common industrial chemical", said Daryl Kimball at the Washington-based Arms Control Association, who favours broad action to deter use of chemical weapons, including chlorine.
The Pentagon says Syria launched 40 surface-to-air missiles in response to the coalition attack.
World closes ranks: Russian Federation and Syria have found little support for their position.
"We worry that's it's not part of a larger strategy to end the war crimes in Syria, but just a show of power that's going to scare the regime a little bit but then everything goes back to normal".
According to the Russian Defense Ministry, the three countries fired over 100 cruise and air-to-surface missiles, most of which were shot down by Syrian air defense.
The three governments noted dozens previous, smaller-scale chlorine and other chemical weapons attacks over the course of the past year, since President Donald Trump first ordered airstrikes against Syria last April.
Despite the strikes, the chemical weapons watchdog agency said its experts would go ahead with their mission.