What is the purpose of the document

to condemn South Africa’s actions in the Sharpeville massacre

Explanation:

The Security Council,

Having considered the complaint of twenty-nine Member States contained in document S/4279 and Add.11 concerning “the situation arising out of the large-scale killings of unarmed and peaceful demonstrators against racial discrimination and segregation in the Union of South Africa”. . . [d]eplores the policies and actions of the Government of the Union of South Africa which have given rise to the present situation.

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.