The night after the US military launched missiles into a Syrian air base, protests brewed across the country.
The Pentagon is looking for any evidence that Moscow knew about or was complicit in the attack in Idlib province that killed at least 80 people and injured dozens more, the CNN reported quoting a senior USA defense official as saying.
Western leaders backed the USA action, saying Syrian President Bashar al-Assad had brought it on himself.
China too warned that it could lead to "further deterioration" of an already tense situation in the region.
By late afternoon on Thursday, the US Joint Chiefs of Staff met at the Pentagon to finalise the plan for the military strikes as Mr Trump headed to his Mar-a-Lago resort in Florida for a summit meeting with Chinese President Xi Jinping.
Howard, the four-star officer who leads U.S. Naval Forces in Europe and Africa, told Reuters the United States had chose to launch the strikes after the United Nations failed to pass a resolution condemning a deadly chemical weapons attack that killed scores of people in rebel-held Khan Sheikhoun. My priority is now to continue contact with the United States and others in the run up to the G7 meeting on 10-11 April - to build coordinated worldwide support for a ceasefire on the ground and an intensified political process.
The attack against a Syrian air base was the first USA assault against the government of President Bashar Assad. "Those days are over".
U.S. officials blame Moscow for propping up Assad. A Russian news agency reported that a frigate would enter the Mediterranean Sea and visit a Syrian base.
"The continued role of Assad must be under question", Turnbull said on Saturday.
Russian Federation immediately suspended an October 2015 deal with the USA aimed at avoiding clashes in Syrian airspace. New Zealand has joined the UK, Australia, Japan, France, and Canada in supporting the move, although we were slightly less full-throated than others. And by launching an attack on Syria the billionaire president has contradicted his own "America First" position, which certainly disavows an interventionist policy.
In Khan Sheikhun, residents welcomed the United States strike as a way to pressure Damascus.
The US has launched missile strikes at a Syrian airfield suspected to have been used to stage a deadly gas attack, putting Washington and Moscow at loggerheads.
"But the Security Council hasn't been able to condemn it or do anything about it".