Iran told visiting UN envoy Staffan de Mistura of its alarm Tuesday about what it said were ceasefire breaches in Syria on the eve of fresh peace negotiations in Geneva, AFP reports.
De Mistura's visit to Tehran - a key backer of President Bashar al-Assad - coincided with an announcement of more Iranian military deaths in Syria.
De Mistura held talks with Iran's deputy foreign minister Hossein Amir Abdollahian ahead of the latest effort to end five years of fighting.