In a letter to Lenin on March 15, 1921, A. A. Joffe, who was then in Riga as chairman of the Soviet peace delegation negotiating with Poland, expressed dissatisfaction over the fact that despite his extensive experience in political and especially diplomatic work, the Party's C.C. kept transferring him from one job to another.
 A probable reference to the Plenary Meeting of the R.C.P.(B.) Central Committee on December 7, 1920, which discussed the conflict between the water transport union and Tsektran (Central Committee of the Joint Trade Union of Rail and Water Transport Workers). During the discussion of this question, Lenin and his supporters were left in a minority, and the resolution proposed by N. I. Bukharin was carried with L. D. Trotsky's support. Lenin analysed this episode in his article "The Party Crisis" (see present edition, Vol. 32, p. 45).
 A reference to the Party Central Committee elected at the 13th sitting of the Tenth Party Congress on March 14, 1921. On March 16, atfer the Congress had closed, a plenum of the R.C.P.(B.) Central Committee met to elect the governing organs of the C.C.