KIEV, Aug. 31 ??“ Petro Poroshenko, the top security advisor to President Viktor Yushchenko, said Wednesday he will travel to Moscow in September for talks over natural gas prices that Russia will charge Ukraine next year.

Russia is pushing for tripling gas price to $150 per 1,000 cubic meters, while Ukraine has insisted on keeping the price unchanged at $50/1,000 cu m amid concerns that rapid price hike would hurt the economy.