Tehran, Iran, hosts a foreign ministers' conference on Syria, but the attendees remain unknown. Russia is to be represented by its ambassador to Iran. [https:--www.reuters.com-article-2012-08-09-us-syria-crisis-idUSBRE8610SH20120809 (Reuters)] [http:--english.ruvr.ru-2012_08_08-Russian-ambassador-to-attend-Syria-meeting-in-Tehran- (The Voice of Russia)]date=August 2019