premise: A dispute between Russia and Ukraine over gas supplies to the strategic transit country should not be politicised, Russian President Vladimir Putin said Friday after a telephone discussion with Ukrainian counterpart Viktor Yushchenko.
  "We are in agreement on not politicising the question of gas," Putin said, quoted by the Interfax news agency.
  Yushchenko had assured Putin that he would not allow "the politicisation of this question and I agree with him," the Russian leader said.
  "A market exists and all our partners should benefit from equal conditions. Economic matters are one thing, politics another," Putin said.
   Why did Ukraine and Russia agree on not politicising the question of gas?
hypothesis: market exists and all our partners should benefit from equal conditions