YEREVAN. – Armenian President Serzh Sargsyan will head for the Russian Federation Tuesday on a working visit.

In Moscow, Sargsyan will partake in the Collective Security Treaty Organization (CSTO) Collective Security Council session devoted to 20th anniversary of the signing of the Collective Security Treaty and 10th anniversary of the CSTO, the President’s Press Office informed Armenian News-NEWS.am.    

On the same day, Armenia’s President will also attend the informal session of the CIS Council of Heads of State.