MOSCOW, April 19 the integrity of Russia, including claims to Crimea, Kaliningrad, the Kuril Islands, said the head of the commission Andrey Klimov. politician during a briefing on Tuesday. Ukrainian authorities to «return the Crimea», sounding from Poland inflammatory hints about the Kaliningrad region of Russia,» he noted. b Russian islands of the Kuril ridge,» Klimov added. According to him, this topic deserves a separate professional study and evaluation. «We plan to carry out this work at the commission site also in the second quarter of this year,» the senator concluded.