UN ambassador Nikki Haley seemed to hint at a possible US intervention in Syria on Wednesday during a UN Security Council meeting.

During her address to the council, Haley harshly condemned the gas attack in Syria that killed dozens on Tuesday.

She slammed Syrian President Bashar al-Assad’s regime as “barbaric” and said Tuesday’s attack had “all the hallmarks of the Assad regime’s use of chemical weapons.”

Assad was previously blamed by the international community for a chemical weapons attack that killed 1,400 Syrians on the outskirts of Damascus in 2013. A UN report last August explicitly singled out Assad’s forces and said they used chemical weapons in the town of Talmenes in 2014 and Sarmin in 2015.