The move follows a decision by Poroshenko, who signed a decree declaring martial law in several Ukrainian regions located near the Russian border and the coasts of the Black Sea and the Sea of Azov, which will be in place for 30 days, due to the Kerch Strait incident.
President Petro Poroshenko has announced that Ukraine would limit the entry into the country for Russian males aged 16-60.
On 25 November, Russia’s Federal Security Service (FSB) announced that the Ukrainian Berdyansk and Nikopol gunboats and the Yany Kapu tugboat had illegally crossed the Russian maritime border as they sailed toward the Kerch Strait, the entrance to the Sea of Azov. The Ukrainian vessels were seized by Russia after failing to respond to a demand to stop.