so. "The only way we can change that (the basing of Russian warships and naval personnel in Ukraine) is with Russia's agreement. "There is no way we (Ukrainians) can revise the terms of the treaty unilaterally," he said. Poroshenko's remarks put an apparent end to proposals made by nationalist politicians in Ukraine's parliament in previous months that Kiev abrogate a 2003 agreement with Russia on fleet-basing rights, in order to join NATO more quickly. A key term of NATO membership is the absence of non-NATO troops on a joining country's territory. Poroshenko is the number two man in the Nashe Ukraina political party, the right wing of which advocates ending all relations between Ukraine and Russia. --More 2348 Local Time 2048 GMT