On their side, the Ukrainians say their ships were operating legally, traveling from Odessa to Mariupol, and claim the Russians were briefed on the route to be followed.
Russian Federation seized three Ukrainian naval ships off the coast of Russia-annexed Crimea on Sunday (25 November) after opening fire on them and wounding several sailors, in a move that risks igniting a unsafe new crisis between the two countries.
Britain on Monday condemned Russia's "act of aggression" against Ukrainian ships in the Kerch Strait off the coast of the Kremlin-annexed Crimea peninsula. Ukraine, along with almost every other country in the world, refuses to recognize that claim.
The office of Ukrainian President Petro Poroshenko described the Russian action against the Ukrainian navy ships as "an act of aggression aimed at deliberately escalating the situation in the waters of the Sea of Azov and the Kerch Strait", and called for worldwide condemnation of Moscow and the imposition of new sanctions.
Shortly afterward, Russian warships opened fire on two other Ukrainian ships, wounding six sailors, two of them seriously. The boats were towed to a nearby port.
Lawmakers backed President Petro Poroshenko's request to bring it in for 30 days starting from 28 November.
NATO Secretary-General Jens Stoltenberg "expressed NATO's full support for Ukraine's territorial integrity and sovereignty, including its full navigational rights in its territorial waters under worldwide law", according to a statement Monday.
The FSB will release evidence proving "Kiev's plans to carry out a provocation in the Black Sea", state media said.
This incident is a reminder that there is a war going on in Ukraine. North Atlantic Treaty Organisation called for "restraint and deescalation".More news: Chase Daniel slated to start for Bears, Mitch Trubisky listed as doubtful
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"I support the European Union and NATO's call for a de-escalation of the tense situation", Ratas said.
"The incident in Kerch Strait is a serious breach of global law".
The White House was largely silent about the incident with no comments from senior administration officials Sunday or overnight until condemnations coming the following day by special U.S. envoy to Ukraine Kurt Volker and U.S. Ambassador to the United Nations Nikki Haley, who summoned an emergency meeting of the body's security council to discuss the aggression.
Part 1, Article 36 of the UN Convention states that in the straits referred to in Article 37 of the UN Convention, all ships and aircraft shall enjoy the right of transit passage which shall not be obstructed.
The news revived memories of Russia's 2014 annexation of Crimea, the Black Sea peninsula previously controlled by Ukraine, and raised further concerns over Russia's territorial ambitions.
Amid the Black Sea standoff, popular Russian TV host Dmitry Kiselyov told state television that Poroshenko was picking a fight with Russia at the prompting of the United States.
Protesters, some armed with flares, rallied outside the Russian embassy in Kiev on Sunday night in response to the latest development. "We are very angry". "We should have severed all diplomatic relations with this country a long time ago", he added.
While Russia didn't confirm or deny using weapons, the Federal Security Service, or FSB, in Crimea said all necessary measures were used to stop the Ukrainians, according to the RIA news service.