For the historical record, Buddhists have been involved in a variety of national wars, including the Sinhalese (Ceylon, Sri Lanka)nationalist cause -- due to some misunderstood early texts. They are currently involved in the civil war in Sri Lanka, where some of them have not exactly covered themselves in glory. The role of Buddhists in the Japanese conflicts of the 2oth century is still understudied. But generally their hands are pretty clean: more victims than persecutors. The Taliban are following alas in the footsteps of the Islamic purges of Buddhism in India in the Middle Ages when hundreds of thousands of Buddhists were killed, the universities destroyed, and the teachers had to flee into Tibet. The current situation brings back bad memories of that history too.
yours, Peter T.