KIEV, June 24 (Xinhua) -- Ukraine is not going to review the deadline for withdrawal of the Russian Black Sea Fleet from its territory, Ukrainian Foreign Ministry's spokesman Vasyl Kyrylych said Tuesday.

    "The Black Sea Fleet must leave Ukraine by May 29 in 2017. This is not a subject for discussion," Kyrylych told a briefing in Kiev.

    The issue of the Black Sea Fleet base cannot be "a subject of trade," he said, adding that Ukrainian Constitution does not allow a foreign military to be based in the country's territory.

    Earlier, Russian Deputy Foreign Minister Grigory Karasin said that Moscow is willing to consider paying a higher rent for the Black Sea Fleet staying in Crimea after 2017.