sentences:  In Sidon, Julian Grenier, Lord of Sidon and Beaufort, described by his contemporaries as irresponsible and light-headed, took an opportunity to raid and plunder the area of the Beqaa Valley in Mongol territory.One of the Mongols killed was Kitbuqa's nephew, and in retaliation, Kitbuqa raided the city of Sidon.These events added to the level of distrust between the Mongols and the Crusader forces, whose own center of power was now in the coastal city of Acre.