In this image taken from TV Syria's president Bashar al-Assad speaks during an interview in Tehran, Iran.

Representatives of the Syrian opposition on Monday put forward Brigadier General Manaf Tlass, who defected earlier this month, to succeed President Bashar al-Assad.

At a meeting with Russian Foreign Minister Sergei Lavrov in Moscow, the opposition continued to insist that al-Assad must step down before a political dialogue can take place, according to the news agency Interfax. – Sapa-dpa