[Rumors circulate that Iran's Supreme Leader Khamenei 'has died,' probability of stepping down before April surges to 72%] BlockBeats reports that on February 28, the well-known monitoring channel Pentagon Pizza Watch posted that there are unverified reports claiming Supreme Leader Khamenei was killed in an earlier attack. As a result of this news, the probability of Khamenei stepping down before April on Polymarket surged to 72%.