President Serzh Sargsyan has today visited the Russian Embassy to congratulate the staff on national holiday - the day of adopting Declaration on State Sovereignty. "I am very happy the Armenian-Russian ties are developing. Just a couple of days ago when I met with Russian President, we emphasized that bilateral relations are developing by every year," President stressed, wishing Russia and Russian people prosperity. "The stronger Russia, a stronger country is Armenia - this is what I have always said," Presidential Press Service quotes Mr. Sargsyan as saying.