"Military industry was encouraged by an ideology of hostility to foreign states and influences that characterised even Communist moderates. The extent to which Stalin’s rise to power was supported by a military high command concerned by the efforts of the fiscally conservative Communist Right, such as Nicolay Bukharin (also an opponent of collectivisation), to resist the rise in military spending was also relevant. All these factors together contributed to and interacted with an extensive development of Soviet military industry. Stalin was eager to back the industrialisation necessary for large-scale mechanisation of the army. He regarded powerful military forces as a way to defend the Revolution against the allegedly implacably hostile capitalist states, especially Britain and Japan. Moreover, his support for Socialism in one state was not inherently pacific, as he used the idea of international crisis to press for an extension of state dominance, notably with the war scare of 1927, which he did not try to defuse. Bukharin, a prominent member of the Politburo in 1924–9, was arrested in 1937. After a show-trial, he was shot in 1938."