Russian President Vladimir Putin and North Korean leader Kim Jong Un are expected to sign a comprehensive cooperation treaty during Putin’s imminent visit to the country, the Kremlin said on Tuesday. Putin will go to the isolated dictatorship for what officials described as a “friendly state visit.” Putin had approved a draft treaty prepared by the Russian Foreign Ministry, officials said. It is to be signed in person by Putin and Kim. No details were released on the treaty’s contents. Putin was to visit the eastern Russian city of Yakutsk before arriving in North Korea. He is due to depart fr…