The question of why belief in Mashiach should be a fundamental belief (an ikkar/yesod of Judaism of the Rambam's 13) is asked here, and I answered it myself here. However, when it comes to this ...
In what sense is belief in the eventual coming of Moshiach fundamental to Judaism? Rambam famously includes it as the twelfth in his list of iqarim, but why? Considering the other iqarim, Judaism ...
The Rambam lists waiting for Moshiach as one of the 13 principles of faith. We have a tradition that there will be two Moshiachs, Ben Yosef and Ben David, which one was the Rambam referring to?