Heads of state and government sent congratulatory addresses to Serzh Sargsyan on occasion of assuming the office of President of the Republic of Armenia.

Congratulations were received from Germany's President Horst Keller, Italy's President Giorgio Napolitano, India's President Pratibha Patil, Israel's President Shimon Peres, Finland's president Tarja Halonen, Romania's President Traian Basescu, UK Prime Minister Gordon Brown, Japan's Prime Minister Yasuo Fukuda, President of European Commission Jose Manuel Barroso, NATO Secretary General Jaap de Hoop Scheffer.