'No effort should be spared by all parties to keep the situation under control and to avoid sectarian tensions to escalate, they agreed,' according to a press release issued by the EU External Action Service (EAAS) on Sunday.
'The security and stability of the whole Region, that is already facing great threats, is at stake,' underlined Mogherini.
'The international community and the main regional actors are actively working together to support a political solution for the crisis in Syria and to join forces against terrorists groups, and these efforts should not be jeopardized by new instability.'
Mogherini and Zarif 'also discussed the ongoing work towards implementation day (of nuclear agreement) and took stock of the important progress made so far.'
