sentences:  The crusade was ultimately handled by James's two sons Fernando Sanchez and Pedro Fernandez, who arrived in Acre in December 1269.Abaqa, despite his earlier promises of assistance, was in the process of facing another threat, an invasion in Khorasan by Mongols from Turkestan, and so could only commit a small force for the Holy Land, which did little but brandish the threat of an invasion along the Syrian frontier in October 1269.He raided as far as Harim and Afamiyaa in October, but retreated as soon as Baibars' forces advanced.