British jets fired missiles at a Syrian military base suspected of holding chemical weapons components, in the UK's first military action against President Bashar al-Assad's regime. And the attack was allegedly committed to "deter" Assad and his "regime" from the repeated use of chemical weapons.
Scottish First Minister Nicola Sturgeon said Syria's use of chemical weapons could not be tolerated but questioned whether the strikes would halt their use or contribute to ending the civil war. "And it was not about regime change".
"As I discussed with President Trump and President Macron, it was a limited, targeted and effective strike with clear boundaries that expressly sought to avoid escalation and did everything possible to prevent civilian casualties", she said.
David Miliband, the chief executive of the International Rescue Committee and former Labour foreign minister: "Now that the US, France and the United Kingdom have decided on their reaction to the use of chemical weapons last weekend, the need for a diplomatic offensive is more imperative than ever". She said speed was essential and that military action was in the national interest.
Stop the War, a pacifist coalition once chaired by Corbyn, has called a demonstration outside the British parliament on Monday to protest about the strikes.
May referred specifically to last month's nerve agent attack on former spy Sergei Skripal and his daughter in the southern English cathedral city of Salisbury that she has blamed on Russian Federation.
"We can not allow the use of chemical weapons to become normalised - within Syria, on the streets of the United Kingdom, or anywhere else in our world", the PM stated.
Britain has blamed Russian Federation for the poisoning - a charge vehemently denied by the Kremlin in an escalating diplomatic crisis between Moscow and the West.
In attacks alongside USA and French allies on Saturday, four British Tornado jets fired Storm Shadow missiles at a Syrian military base suspected of holding chemical weapons components.
Mr Trump said the joint strikes against the Syrian regime were "perfectly executed".
The prime mister said that the attack was a "success" according to a preliminary assessment, while the data is still being evaluated.
Britain's defence ministry said "very careful scientific analysis" had been applied to maximise the destruction of stockpiled chemicals while minimising any risk of contamination to surrounding areas.
"The facility which was struck is located some distance from any known concentrations of civilian habitation, reducing yet further any such risk", it added.
British Prime Minister Theresa May described the strike as "limited and targeted".
Smoke rising from east Damascus due to air strike. The poll showed 43 percent of voters opposed such a strike and 34 percent did not know what should be done.
Often when the British government decides on military action, the opposition offers its full support.
Despite her careful language, there was immediate criticism from opposition lawmakers who said May should have consulted parliament before joining US-led action in Syria.
"Further UK military intervention in Syria's appalling multi-sided war risks escalating an already devastating conflict", he said.
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".