 In 1365, attempts by the Mamluks to annex Armenia, which had since replaced Crusader Acre as the Christian commercial foothold of Asia, were stifled by an invasion of Alexandria by Peter I of Cyprus.The Mamluks concurrently experienced a deterioration of their lucrative position in international trade and the economy of the sultanate declined, further weakening the Bahri regime.Meanwhile, the perceived harshness of Yalbugha's educational methods and his refusal to rescind his disciplinary reforms led to a mamluk backlash.