Ambassador Jayatilleka was a speaker at the Roundtable discussion on "Enhancing international cooperation to combat spread of terrorist ideology and counter self-radicalization of lone terrorists" moderated by Deputy Secretary of Security Council of the Russian Federation Yury Kokov, at the 10th International meeting of the high-ranking officials responsible for security matters at Ufa organized by the Security Council of the Russian Federation.

On June 17-20, 2019 Sri Lankan delegation headed by Ambassador Dayan Jayatilleka and including Additional Secretary of Defence of Sri Lanka Mr. Anuradha Wijekoon took part in the X International Meeting of High-Level Officials Responsible for Security Matters held in Ufa at the initiative of the Security Council of the Russian Federation.

On June 15, 2019 President of Sri Lanka Maithripala Sirisena met with President of the Russian Federation Vladimir Putin on the sidelines of the 5th Summit of the Conference on Interaction and Confidence Building Measures in Asia (CICA), which was held on June 14-15 in Dushanbe, capital of Tajikistan.