On April 23, 2019 VIII Moscow Conference on International Security, organized annually by Ministry of Defence of the Russian Federation, started its three-day event. At the Welcome cocktail reception the Deputy Minister of Defence of the Russian Federation Colonel General Alexander Fomin expressed words of condolence and sympathy to people of New Zealand, India, Sri Lanka, who had suffered acts of terrorism most recently. In his speech General Fomin noted that peace is still not solid and Russia is committed to “the eradication of terrorism from the face of Earth”.

On April 22, 2019, during the tragic days of mourning for the victims of the inhuman acts of terrorism in Sri Lanka, Dr. Dayan Jayatilleka, Ambassador Extraordinary and Plenipotentiary of Sri Lanka in the Russian Federation spoke to the students and academic staff of National Research University – Higher School of Economics (HSE). The Ambassador had been invited to deliver the lecture on April 22 by Prof. Sergey A. Karaganov, Dean of HSE Faculty of World Economy and International Relations, one of Russia's reference experts in global affairs, at his first meeting with Ambassador Jayatilleka in February 2019. On the day following the heartbreaking attacks on peaceful Sri Lankans, Ambassador Jayatilleka deemed it particularly important to address his lecture on Terrorism and the lessons of its defeat in Sri Lanka's 10 years ago, at this very moment when Sri Lanka and the entire world are challenged again by this rampant evil.

The Government of Sri Lanka has declared April 23, 2019 as the "National Day of Mourning" to remember and respect the victims of the bombings that took place in Sri Lanka on April 23. According to the latest data, the explosions took lives of more than 290 people, and more than 500 were injured.