Poroshenko issued a decree which enacted a relevant resolution by the National Security and Defence Council, the president's press service reported on Friday. According to the report, the decree describes and endorses the legal division of the country’s territory into military and administrative areas in the interests of ensuring defence of Ukraine. According to the document, the territory of Ukraine is divided into four military land zones and a separate military land zone, which is the area of responsibility of the North, South, West and East operational commands. The airspace of Ukraine is divided into three military air zones and one separate military air zone, under responsibility of the three. The maritime space, taking into account the legal status of the temporarily occupied territories of the internal sea waters and the territorial sea of Ukraine around the Crimean peninsula and parts of Donetsk region, is divided into the areas of responsibility of the Black Sea and Azov naval commands of the Armed Forces of Ukraine.