 Researcher Vadim Rogovin believes that the cause of Stalin's "left turn" was the grain harvest crisis of 1927; the peasantry, especially the well-to-do, massively refused to sell the bread, considering the purchase prices set by the state to be low.The internal economic crisis of 1927 intertwined with a sharp exacerbation of the foreign policy situation.On February 23, 1927, the British Foreign Secretary sent a note to the Soviet Union demanding that it stop supporting the Kuomintang-Communist government in China.