List of leaders of the Soviet Union
Following Joseph Stalin's consolidation of power in the 1920s, the post of the General Secretary of the Central Committee of the Communist Party became synonymous with leader of the Soviet Union, because the post controlled both the Communist Party and the Soviet Government, both indirectly, via Party membership, and via the tradition of a single person holding two highest posts: in the Party and in the government. The post of the General Secretary was abolished in 1952 under Stalin and later re-established by Nikita Khrushchev under the name of First Secretary. In 1966, Leonid Brezhnev reverted the office title to its former name. Being the head of the Communist Party of the Soviet Union (CPSU), the office of the General Secretary was the highest in the Soviet Union until 1990. The post of General Secretary lacked clear guidelines of succession, so after the death or removal of a Soviet leader the successor usually needed the support of the Politburo, the Central Committee, or another government or party apparatus to both take and stay in power. The President of the Soviet Union, an office created in March 1990, replaced the General Secretary as the highest Soviet political office.
Emblem of the Ukrainian Soviet Socialist Republic
After that, Korotchenko and Hrechukha continued the letter to Lazar Kaganovich, who was the First Secretary of the Communist Party of Ukraine (Bolsheviks).
In an official correspondence, Kaganovich, together with V. Nyzhnyk, the Chairman of the Presidium of the Supreme Soviet of the Ukrainian SSR, continue to discuss this matter with Nikolay Shvernik, who was the Chairman of the Presidium of the Supreme Soviet of the USSR at that time. Kaganovich and Nyzhnyk send a correspondence to Shvernik at January 3, 1948.
In January 14, 1948, Hrechukha received a reply from Shvernik from his letter. 
After the changes were done, the result was given to Nikita Khrushchev, who was the First Secretary of the Communist Party of Ukraine (Bolsheviks). Then, he send the result of the discussion to Joseph Stalin.
By the decree of the Presidium of the Supreme Soviet of the Ukrainian SSR of November 21, 1949 and by the law adopted by the Supreme Soviet of the Ukrainian SSR on July 5, 1950, a red five-pointed star was added at the top of the Ukrainian SSR's coat of arms, and also the motto, the name of the republic in Ukrainian, and the motto in Ukrainian and Russian language is transferred to the lateral coils of the red tape.