Soviet Ambassador to North Korea Shtykov reports that South Korean forces were being expanded with US assistance and that the government of President Syngman Rhee was taking steps to increase the combat readiness of its army.

Gromyko reports Stalin's approval of Kim Il Sung's request for the prompt delivery of medical supplies to North Korea.

The telegram relays a request from Mao, conveyed via Chinese Foreign Minister Zhou Enlai, seeking Stalin’s “personal clarifications” of his stand on a potential North Korean action to reunify the country. Mao sought the information after hearing a report from Kim, who had arrived that day in the Chinese capital for a secret two-day visit and clearly claimed that he had received Stalin’s blessing.

The cable contains Stalin’s personal response to Mao's 13 May telegram. Using the code-name “Filippov,” Stalin confirms his agreement with the North Korean proposal to “move toward reunification,” contingent on Beijing’s agreement.

Terenti Shtykov reports on Kim Il Sung's military planning for an invasion of South Korea and signals Soviet approval for the invasion.

Stalin agrees with Mao Zedong that North Korea is not yet ready to launch an assault, and reports that the Soviet Union has told North Korea to concentrate on developing liberated areas and guerrillas in South Korea.

A telegram from the leader of the group of Soviet specialists in Northeast China to the Chairman of the USSR Council of Ministers about the results of Chinese-Korean talks on military cooperation.

Liu Shaoqi reports to Mao Zedong that the ethnic Korean officers have arrived to bring back the ethnic Koreans to Korea. To the request of the North Korean officers in bringing back the weapons ethnic Korean officers had used, Mao responds in the affirmative.

Lin Biao and others ask for instructions on whether to send ethnic Korean officers and soldiers to North Korea.

The Soviet Politburo argues that North Korea is not ready to launch a successful overthrow of the South Korean regime and suggests North Korea should concentrate its efforts on developing partisan groups in South Korea.