The United Nations says Iran has been invited to attend a meeting of foreign ministers In Switzerland on Wednesday ahead of internationally brokered peace talks between Syria's warring factions.


UN Secretary-General Ban Ki-moon told reporters Sunday afternoon that Iran's Foreign Minister Javad Zarif has pledged that his country "would play a positive and constructive role" in the meeting to be held in the Swiss city of Montreux.


Ban says Iran is among 10 additional countries invited to attend the Montreux meeting that precedes the talks scheduled to begin Friday between Syrian President Bashar al-Assad's delegation and Syrian opposition groups at the UN headquarters in Geneva. Thirty other countries had already accepted invitations.


Ban says Iran has agreed to endorse principles from a previous peace conference calling for a transitional government in Syria.