What were the accomplishments of the Casablanca and Teheran Conferences?

The Casablanca Conference in January 1943 marked the first time Allied leaders Franklin D. Roosevelt and Winston Churchill coordinated their military strategies, resulting in the decision to pursue the "unconditional surrender" of Axis powers. The Tehran Conference in November-December 1943 saw Roosevelt, Churchill, and Joseph Stalin solidifying plans for the D-Day invasion of Europe, agreeing on a coordinated military strategy, and discussing post-war plans for Germany and Eastern Europe. Both conferences were crucial in strengthening Allied cooperation and setting the stage for future military operations.