Based on a sicha given by Rav Uri Sherky
How can we begin to understand the national catastrophe perpetrated on our people by the Nazis and their collaborators YmSh ? First of all we must understand that this was not the first Shoah in Jewish history. That took place in Pharo's Egypt where Hebrew children were thrown into the Nile and according to one peirush only20% of the Hebrews left Egypt in the Exodus while 80% were annihilated. Another Shoah was planned and almost carried out by Haman averted only by the mesirut nefesh of Esther and Mordechai and the Jews who defended their communities in Shushan and throughout the Persian Empire
What do we learn from this? Whenever Galut precedes Geulah there is an intermediate time which is the time of Amalek The Ramchal put it this way-During the Galut the divine light comes to Israel through a Tzohar, a narrow aperture or window.In the time of Geula, the gates of redemption are open tolGeulah in the divine light. But in the cusp between Galut and Geulah there is a time when darkness reigns and Amalek rules.
This happened in the Exodus from Egypt before the conquest of Yehoshuah. And again in the time of Haman between the Babylonian Exile and the return to Zion and the second Temple.
And lastly at the end of Galut Edom and before the Geulah of the State of IsraelsThis perspective might help us understand-But in the end the Shoah is beyond understanding.