I want to know the answer to the following question:
Who had to agree to the US's decision to divide Korea at the 38th parallel?
All the background I'm provided with is that "Explaining the choice of the 38th parallel, Rusk observed, "even though it was further north than could be realistically reached by U.S. forces, in the event of Soviet disagreement...we felt it important to include the capital of Korea in the area of responsibility of American troops".". Is that enough to answer the question?