 Complete the following phrase:  The Republican Stadium was named after Vazgen Sargsyan by a presidential decree on December 28, 1999. Vazgen Sargsyan was the commander of the Armenian forces during the First Nagorno-Karabakh War and served as Defence Minister from 1995 to 1999 and Prime Minister from June to October 27, 1999, when he and other high-ranked officials were killed in the 