I want to know the answer to the following question:
What did Altan Khan threaten the Mongol princes and subjects with if they did not convert?
All the background I'm provided with is that "Angela F. Howard writes that this unique relationship not only provided the Dalai Lama and Panchen Lama with religious and political authority in Tibet, but that Altan Khan gained "enormous power among the entire Mongol population."". Is that enough to answer the question?