 Around 1434/5, Alexander encouraged the Armenian prince Beshken II Orbelian to attack the Kara Koyunlu clansmen in Syunik (Siunia) and, for his victory, granted him Lorri under terms of vassalage.In 1440, Alexander refused to pay tribute to Jahan Shah of the Kara Kouynlu.In March, Jahan Shah surged into Georgia with 20,000 troops, destroyed the city of Samshvilde and sacked the capital city Tbilisi.