This Maamar introduces us to the idea of "Panim" and explains this idea in Elokus and the Neshama.
This the Rebbe connects to the name Hadasa.
The Maamar then argues that the Panim has two levels: 1) the light of Etzem, 2) The Koach (power) of the Etzem which is even higher than the Ohr of Etzem, and this deeper idea is manifest in Mesiras Nefesh in Golus.
The Maamar then proceeds to saying that the manifesting of this Koach will drag with itself the giluy as well.
On this basis the Maamar resolves the questions about Hadasa being Esther and why she is compared to the moon (Estahar) etc.
Al Kein Kuru Layamim Aile' Purim 5713.
This is the Maamar connected with the story of Atalin's death.
This edited Maamar of the Rebbe (that is connected to the death of Stalin), addresses Goral and Bechira (Free Will).
This Shiur overviews four levels of connection: 1) Reason, 2) Will (Achashvairosh in this Maamar), 3) Goral (all are equal), 4) Bechira, Free Will, that doesn't need to be even to be equal.
The second Shiur deals with the Maamar itself: 1) The comparison and difference between Yom Kipur and Purim (The Tikunei Zohar and the Totah Ohr), 2) Why Avhashvairosh was not enough, 3) Haman's choice in a Goral was right, 4) He failed (only) because Yidden's Mesiras Nefesh aroused the idea of Bechira that is higher than goral.
This is the classic Purim maamar. The Yidden were in Golus that is compared to sleep. Yidden's Mesiras Nefesh "roused" Hashem (kvayachol) from His sleep.
The reason the waking up is the miracle [and not the Yidden's mesiras nefesh which aroused it] is because it's a miracle within nature. Hashem was still "sleeping" in Golus and yet this miracle occured, the koach to affect this comes straight from Atzmus, [that creates harmony between G-dliness and the world].