But that explanation is lost to time.
One translation I read suggested a probable explanation.
Rasputin's phone advice was the same as many modern quacks: keep the patient away from modern medicine and doctors.
So the hemophiliac prince was no longer given his normal cocktail of drugs, which probably included a new medicine for the time: aspirin.
Stop giving a blood thinner to a hemophiliac and his condition (temporarily) improved. The best explanation for the people at the time was "magic".
So in this latest tit-for-tat, the "terrorist organization" precisely targeted a military vehicle.
Then, "the most moral army in the world" responded by dropping internationally banned chemical agent on a few towns.