PARIS: U.S. President Barack Obama and his French counterpart Francois Hollande are both convinced the Syrian regime used chemical weapons on its own people last week, an aide to Hollande said Friday.
The two leaders "share the same certainty that the attack was chemical in nature and that the regime was undoubtedly responsible," the aide said after Obama and Hollande held phone talks Friday.
" Francois Hollande repeated France's determination not to leave these crimes unpunished and felt the same determination on Obama's side."
The aide said the two leaders spoke for around 45 minutes and had "reviewed the chemical attack and the proof" that it was carried out by Syrian President Bashar al-Assad's forces.
The August 21 attack outside Damascus killed 1,429 people including at least 426 children, according to a U.S. intelligence report released Friday.
Hollande said in an interview with Le Monde newspaper due to be published Saturday that his government wants "firm" action against Assad's regime in retaliation for the attack.
France is poised to become the United States's main ally in the Syria crisis after the British parliament rejected involvement in any military strikes.