Aligning himself with the leftist faction of the party early on, Sambuu supported the purges and executions of both Dogsomyn Bodoo in 1922 and party leader Soliin Danzan in 1924.
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He was awarded the Order of Sükhbaatar medal four times, the Soviet Order of the Red Banner of Labour twice, the Order of the Polar Star as well as the Order of Lenin and the Lenin Peace Prize in 1966.