National Security Council and President Eisenhower. [35] The United States unilaterally repealed paragraph 13(d), thereby breaking the ceasefire agreement, despite the concerns of UNITED Nations allies. [36] [37] [38] At a meeting of the Military Armaments Commission on June 21, 1957, the United States informed North Korean officials that the United Nations command was no longer bound by paragraph 13(d) of the armistice. [39] [40] In January 1958, honest John nuclear missiles and 280mm nuclear guns were deployed in South Korea,[41] followed by nuclear explosive ordnance[42] and nuclear-weapon Matador cruise missiles with the range of reaching China and the Soviet Union. [37] [43] North Korea believed that the United States had already introduced new weapons, citing reports from the NNSC inspection team from August 1953 to April 1954. .