North Vietnam invaded Laos in July 1959 aided by the Pathet Lao and used 30,000 men to build a network of supply and reinforcement routes running through Laos and Cambodia that became known as the Hồ Chí Minh trail. It allowed the North to send manpower and materiel to the Việt Cộng with much less exposure to South Vietnamese forces, achieving a considerable advantage.
At the Lushan Conference in July/August 1959, several ministers expressed concern that the Great Leap Forward had not proved as successful as planned. The most direct of these was Minister of Defence and Korean War veteran General Peng Dehuai. Following Peng's criticism of the Great Leap Forward, Mao orchestrated a purge of Peng and his supporters, stifling criticism of the Great Leap policies. Senior officials who reported the truth of the famine to Mao were branded as "right opportunists."
In July 1959 President Eisenhower sent Nixon to the Soviet Union for the opening of the American National Exhibition in Moscow. On July 24, Nixon was touring the exhibits with Soviet Premier Nikita Khrushchev when the two stopped at a model of an American kitchen and engaged in an impromptu exchange about the merits of capitalism versus communism that became known as the "Kitchen Debate".