Russia has promised to strengthen Syria’s anti-aircraft defences after the US bombarded a Syrian air base with missiles, reportedly destroying it.
US officials said the base had been used to launch a chemical weapons attack in north-western Syria that left dozens of civilians dead on Tuesday.
Russia, which backs President Bashar al-Assad, condemned the US strike.
It also suspended a deal with the US designed to avoid collisions between their air forces over Syria.
In the first direct US military action against Syria’s government, at least six people are reported to have been killed.
Some 80 civilians, including many children, died in the suspected nerve gas attack in the rebel-held town of Khan Sheikhoun in Idlib province. Syria denies using nerve gas.
What do we know about the missile strike?
Two US Navy destroyers in the Mediterranean Sea fired 59 Tomahawk cruise missiles at Shayrat airfield in western Homs province at about 04:40 Syrian time (01:40 GMT).
They targeted aircraft, aircraft shelters, storage areas, ammunition supply bunkers and air defence systems at the Syrian government-controlled facility, according to the Pentagon.
It said the base was used to store chemical weapons and that “every precaution” had been taken to avoid casualties. The Russian military was informed beforehand, the Pentagon said.
Speaking from his Mar-a-Lago estate in Florida, US President Donald Trump said in a statement that he had acted to prevent the use of chemical weapons.
What are they saying on the ground?
Retired civil servant Mateea Zefa, who lives about 800m (874yds) from the base, went with his children to look at the base afterwards and found it “totally destroyed”.
“We saw lots of bombs,” he told the BBC by phone. “Loads of them. It was a tough night. My house was damaged, almost all the windows broke and some walls cracked.”
Houses on one side of the base were also “totally destroyed”, he added.
A nurse at Shayrat’s hospital, Ammar al-Khidr, recalled being woken by “big explosions” at “around 03:30 or 03:45”.
Some children and other people were injured by shards of breaking glass but no civilians were killed, she said.
The dead and seriously injured were all soldiers, she said, adding that they had been brought to her hospital.
Syrian state media say as many as nine civilians were killed in the strike, four of them children. The BBC is unable to confirm this information.
The Syrian army said there had been significant damage to the base.
What is different about this strike?
The US has led a coalition carrying out air strikes against jihadist groups in Syria since 2014 but this is the first time it has targeted government forces.
President Trump previously spoke out against US military involvement in Syria, instead calling for a greater focus on domestic interests.
US Secretary of State Rex Tillerson signalled a sudden shift in policy on Thursday, saying that Bashar al-Assad should have no role in a future Syria.
Dmitry Peskov, spokesman for Russian President Vladimir Putin, called the US strike an “act of aggression against a sovereign nation”.
Russia’s military said many cruise missiles had failed to hit their intended targets.
What do we know about the chemical ‘attack’?
Hundreds suffered symptoms consistent with reaction to a nerve agent.
The White House believes the attack was launched from the Shayrat airfield.
Russia said a Syrian air strike had hit a rebel depot containing chemical weapons.
What are others saying?
- Syrian opposition group the Syrian National Coalition called for further strikes in the future.
- The UK government called it “an appropriate response to the barbaric chemical weapons attack”
- Egypt urged both the US and Russia to take “effective action” to reach a comprehensive solution to the Syrian crisis
The UN Security Council will hold further talks on Friday as it tries to agree a resolution calling for an investigation into the deaths in Khan Sheikhoun.