Baku, May 8, AZERTAC Rumen Radev, President of the Republic of Bulgaria, who is on an official visit to Azerbaijan, along with his wife Desislava Radeva, visited the Alley of Martyrs in Baku.President Rumen Radev paid tribute to Azerbaijani heroes who sacrificed their lives for the country’s independence and territorial integrity. He also laid a wreath at the Eternal Flame monument.The Bulgarian President and his wife then enjoyed a panoramic view of Baku as they were informed about the history of the Alley of Martyrs and the redevelopment works carried out in the city.