someone knows the story of the Baron Ungern von Sternberg.

A russian general from german-baltic origins, who converted to Vajrayana and lived between mongols, with some mesianic views like create a "Buddha Empire": in An united Mongolia-Tibet country that will stop Soviet revolution and then attack 'liberal Europe' and conquer the whole Eurasia under the Vajrana religion.
Although today we cannot know what is lie or truth. The soviets portrayed him like a total mass murder, a religious fanatic, the buddhists from mongolias portrayed him as the savior of Dharma.

He restored Bogh Khan and expelled the chinease from Mongolia, captured Urga (Today Ulan Bataar) and proclaimed himself the reborn of Genghis Khan and a Maha Kala.
He kept contact with the 13th Dalai Lama.
When he died shot by the soviets, the Lamas asked to do "puja" for his soul.