[Cronos]

At one point one of his successors actually sent an embassy to the Pope requesting an alliance between the Mongols and Christian Crusaders to wipe out the Muslims

Actually, IIRC it was the other way aroudn -- the Pope sent an envoy to Kublai Khan, the great-grandson of Genghis Khan and absolute ruler of China and Russia. Kublai Khan refused and instead told the Pope to surrender to him.

What a pity, a few years later, the Mongol's cousins, the Turks becameMuslim. What a missed opportunity.

[ZULU]

You are correct. The Pope did send such an envoy.

But one of Kublai's predecessor's and Genghis' successor's did send an envoy to another Pope as a Mongol army was moving into the Middle East.