Baldwin's truce with Saladin was due to expire in May 1182, but was broken in mid-1181 by Raynald, who seized a merchant caravan on its way from Egypt to Damascus. Raynald ignored the king's request to make restitution to Saladin, who was then preparing to annex the Zengid-ruled Aleppo. The king, who consistently acted against Saladin's attempts to expand into northern Syria, decided to oppose him. The recent anti-Catholic coup in Constantinople gave Saladin confidence to attack the Kingdom of Jerusalem. In July, Baldwin marched with his host to relieve the Muslims' siege of Bethsan, and his outnumbered army won the Battle of Le Forbelet. Historian Bernard Hamilton attributes the victory to the respect and loyalty commanded by Baldwin, who stayed on the battlefield despite his illness and intense heat.