Spokeswoman of the UK Prime Minister, Theresa May said: "We believe it was an appropriate response to the barbaric chemical weapons attack launched by the Syrian regime, and is intended to deter further attacks."
US President Donald Trump branded Syrian President Bashar al-Assad a "dictator" who had "launched a horrible chemical weapons attack on innocent civilians".
The country's 1992 constitution, introduced after 35 years of dictatorship, limits the president to a single five-year term but sitting President Horacio Cartes is trying to remove the restriction and run for re-election.
