hostile, renounced the non-aggression pact and severed diplomatic relations with Finland on 28 November. In the following years, Soviet historiography described the incident as Finnish provocation. Doubt on the official Soviet version was cast only in the late 1980s, during the policy of glasnost. The issue has continued to divide Russian historiography even after the end of the Soviet Union in 1991. In 2013, Russian President Vladimir Putin stated at a meeting with military historians that the Soviets had launched the Winter War to "correct mistakes" made in determining the border with Finland after 1917. Opinion on the scale of the initial Soviet invasion decision is divided. The puppet Finnish communist government and the Molotov–Ribbentrop Pact's secret protocols are used as proof by those who argue that the Soviet Union had intended to conquer all of Finland. Hungarian historian István Ravasz wrote that the Soviet Central Committee had set out in 1939 that the former borders of the Tsarist Empire were to be restored, including Finland. American political scientist Dan Reiter stated that the Soviets "sought to impose a regime change" and thus "achieve absolute victory". He quoted Molotov, who had commented in November 1939 on the regime change plan to a Soviet ambassador that the new government "will not be Soviet, but one of a democratic republic. Nobody is going to set up Soviets over there, but we hope it will be a government we can come to terms with as to ensure the security of Leningrad". According to Russian historian Yuri Kilin, the Soviet terms encompassed the strongest fortified approaches of the Finnish defences for a reason. He claimed that Stalin had little hope for such a deal but would play for time for the ongoing mobilisation. He stated the objective as being to secure Finland from being used as a staging ground by means of regime change. Others argue against the idea of a complete Soviet conquest. American historian William R. Trotter asserted that Stalin's objective was to secure Leningrad's flank from a possible German invasion through Finland. He stated that "the strongest argument" against a Soviet intention of full conquest is that it did not happen in either 1939 or during the Continuation War in 1944 even though Stalin "could have done so with comparative ease". Bradley Lightbody wrote that the "entire Soviet aim had been to make the Soviet border more secure". In 2002, Russian