Korean War
On 25 June 1950, the United Nations Security Council unanimously condemned the North Korean invasion of the Republic of Korea, with UN Security Council Resolution 82. The Soviet Union, a veto-wielding power, had boycotted the Council meetings since January 1950, protesting that the Republic of China (Taiwan), not the People's Republic of China, held a permanent seat in the UN Security Council. After debating the matter, the Security Council, on 27 June 1950, published Resolution 83 recommending member states provide military assistance to the Republic of Korea. On 27 June President Truman ordered U.S. air and sea forces to help the South Korean regime. On 4 July the Soviet Deputy Foreign Minister accused the United States of starting armed intervention on behalf of South Korea.

Q: Who accused the United States of beginning an armed intervention in South Korea?
the Soviet Deputy Foreign Minister