sentences:  Arghun then revived the idea of an alliance with the West, and sent multiple envoys to Europe.The first of Arghun's embassies was led by Isa Kelemechi, a Christian Assyrian interpreter who had been head of Kublai Khan's Office of Western Astronomy and sent to Greater Iran at the order of the Great Khan.The embassy was sent because the Great Khan Kublai (Qubilai) ordered Arghun to free Holy Land and protect Christians.