"The Office of the Special Envoy will be present at these talks. The Office of the Special Envoy welcomes any initiative that would push forward reaching a peaceful and diplomatic end to the crisis in Syria," the agency quoted Touma as saying.
Syria has been engulfed in an internal conflict since 2011, when anti-government protests turned into an armed uprising. Currently Syria's Armed Forces are fighting a number of insurgent groups, including Islamic State jihadists.
United Nations-backed international conferences on Syrian reconciliation took place in June 2012 and January 2014 but did not yield any significant results.
In his October meeting with Staffan de Mistura, Russian Foreign Minister Sergei Lavrov called for the resumption of Syrian peace talks. Later Moscow offered to host an informal meeting between the Syrian government and its opposition late in January 2015.
Last Thursday, the spokesperson for the Russian Foreign Ministry Alexander Lukashevich confirmed that the participation of Staffan de Mistura at the Moscow informal talks was possible.
