Shiur from Rabbi Elimelch Kohn Ztl on פרשת תצוה and פרשת זכור. Discussed: 

• Is there a connection between the lack of Moshe Rabeinu in Parshas Tetzaveh, and the lack of Hashem's name in the Megilla. 
• What is the evil that Amalek represents that we have a constant everlasting battle with them, even after they seemingly have disappeared?
• The Netziv discusses why Moshe Rabeinu stepped back from the war with Amalek, and instead, Yehoshua led the attack.