On December 10, 2018, the Federation Council of the Federal Assembly of the Russian Federation gathered more than 200 representatives of parliaments, diplomatic missions, and international organizations from over 50 countries for the International Conference "The Role of Parliaments in Today's World" on the occasion of the 25th anniversary of the Federation Council and the Constitution of the Russian Federation.

On December 7, Dr. Dayan Jayatilleka, Ambassador of Sri Lanka to the Russian Federation, and Madame Sanja Jayatilleka attended the inaugural screening of the film "The Real Cuba" at the invitation of the Ambassador of Cuba to the Russian Federation, Gerardo Penalver Portal.

2018 වසරේ දෙසැම්බර් මස 2 වන දින සිට 5 වන දා දක්වා රුසියාවේ මොස්කව් හි දී පැවති ජාත්‍යන්තර ස්වේච්ඡා සංසදයට නියෝජිතයින් නව (09) දෙනෙකුගෙන් සමන්විත කණ්ඩායමක් ශ්‍රී ලංකාවෙන් සහභාගී විය.

Nine members of the delegation from Sri Lanka visited Russia to participate at the International Volunteer Forum, which was held on December 2—5, 2018, in Moscow.

On December 5, Ambassador Dr. Dayan Jayatilleka paid a courtesy call on Ambassador of Cuba, Gerardo Penalver Portal, a son of a founder of the Revolutionary Armed Forces of Cuba. Cuban Ambassador served as Director General on bilateral relations, coordinating Europe, Canada, Sub-Saharan Africa, North Africa-Middle East, Asia-Pacific, before he assumed his duties in Moscow.

On December 4, Ambassador Dr. Dayan Jayatilleka accompanied by Madame Sanja Jayatilleka attended a meeting at Trialogue Club International, a meeting place of the Russian and foreign diplomats, politicians and experts for discussions on foreign and security policy. It was the last event of the Club for this year. The Club will celebrate its 25th anniversary next year.