French President Francois Hollande warned yesterday that the use of chemical weapons by the Syrian regime would be a legitimate reason for a foreign intervention.

“We with our allies remain very watchful to prevent the use of chemical weapons by the regime, which would be for the international community a legitimate cause for direct intervention,” Hollande said in a speech to French diplomats.

Hollande’s warning came as Turkey’s Foreign Minister Ahmet Davutoglu called for more help from other countries with a growing Syrian refugee crisis and said Ankara would stress this at a UN Security Council meeting on Syria this week.

The number of Syrian refugees in Turkey has nearly doubled over the past two months to more than 80,000 and this weekend Turkey begun temporarily holding thousands of people on the border while they scrambled to erect shelters.

According to AFP, Hollande also said France was ready to recognize a provisional Syrian government once it was formed and urged rebels to establish one as soon as possible.

Calling for an “intensification of efforts for the political transition to take place quickly,” Hollande urged the Syrian opposition to form a “provisional, inclusive and representative” government.

Hollande also confirmed France was working with its partners on the possible establishment of buffer zones within Syria to receive people displaced by the conflict and prevent them flooding over the borders with neighboring states.

Hollande said the opposition of Russia and China to action against the Syrian regime was weakening the UN.

Also yesterday, a spokesperson said UN leader Ban Ki-moon is “shocked” by the reports of a new massacre in Daraya near Damascus and demands an independent inquiry.