In 1246 the Mongol Khan Hüyuk
wrote pope Innocent IV
a letter, summoning the latter
to the Khan's court.

Hüyuk wrote similar letters
to other European rulers.

In case of absence
they were all to be regarded
as enemies of the Mongol Empire.

Hüyuk stumbled into his grave
just two years later
with most of the foreign dignitaries
still missing.