President Petro Poroshenko said he will ask Ukrainian parliament to declare martial law after the Russian military attacked and seized three of the Ukrainian navy’s ships in the black sea. He said they would decide on Monday whether or not to approve martial law. If martial law is approved, then it would restrict civil liberties and give the government more power.
The National Security and Defence Council of Ukraine (NSDC) has said they would support there being martial law for up to 60 days.
Mr Poroshenko added Kiev is not planning an offensive response should martial law be declared.
The Permanent Mission of Ukraine to the UN said: “Ukraine has requested an urgent UN Security Council meeting due to Russian military aggression in the Black Sea and the Sea of Azov: Three Ukrainian vessels attacked and seized, at least six Ukrainian servicemen wounded.”
On Sunday, Russia fired on and seized three Ukrainian naval vessels off the Crimean Peninsula.
Russia has accused the ships of illegally entering its waters.
Russia has also placed a tanker under a bridge in the Kerch Strait, which is the only way of accessing the Sea of Azov.
The sea is shared by the two countries.
During a meeting of the NSDC, Mr Poroshenk called Russia’s actions “unprovoked and crazy”.
According to Ukraine, their ships were trying to sail from the port of Odessa in the Black sea to Mariupol in the Sea of Azov.
They claim the Russians attempted to intercept the ships and rammed one of them.
The ships continued toward the Kerch Strait but were ultimately stopped by the tanker.
Russia then sent to fighter jets and two helicopters to the area.
While Ukraine says that six servicemen were injured, the Russian FSB dispute this claim and say that only three were injured.
Ukraine states they had informed Russia about its plan to move its ships to Mariupol.