Kremlin warns of flare-up of hostilities in Ukraine

KIEV, Ukraine -- The Kremlin warned Tuesday that Ukraine's declaration of martial law over Russia's seizure of three Ukrainian ships might trigger a flare-up in hostilities in eastern Ukraine, while Kiev blamed Russia for parading captured Ukrainian seamen on television.

Russia and Ukraine have blamed each other for Sunday's confrontation in the Kerch Strait, which links the Black Sea and the Sea of Azov. The clash has raised the specter of renewing a full-blown conflict in eastern Ukraine and saw Russia strongly criticized at the United Nations by the United States and its allies.

The Ukrainian parliament Monday adopted a motion by the president to impose martial law for 30 days. That is something Ukraine avoided doing even when Russia annexed its nearby Crimean peninsula in 2014 or sent in clandestine troops and weapons to insurgents in war-torn eastern Ukraine.

On Sunday near Crimea, Russian border guards rammed into and opened fire on three Ukrainian navy vessels traveling from the Black Sea toward a Ukrainian port. The Russians seized the ships and their crews.

Ukraine considers the 24 captured men to be prisoners of war and says some have been seriously injured, while Russia says they are individuals who have violated its border.

The Kremlin reacted strongly to Ukraine's declaration of martial law, with Dmitry Peskov, Russian President Vladimir Putin's spokesman, telling reporters Tuesday it might trigger a flare-up in hostilities in eastern Ukraine.

Ukrainian troops have been fighting Russian-backed separatists in eastern Ukraine since 2014, a conflict leaving more than 10,000 dead, but fighting has eased since a truce in 2015.

The martial law formally went into effect Monday in several parts of Ukraine, including areas bordering territory now held by the separatists.

The Russian intelligence agency FSB claimed the ships had Ukrainian SBU intelligence agents onboard with a mission to mount what they called "provocation" in the Kerch Strait.

The strait is spanned by a new bridge Russia completed this year -- the only land link from the Russian mainland to the annexed peninsula of Crimea.

The SBU on Tuesday confirmed it had officers on the ships but denied any nefarious intentions, saying they were simply fulfilling counterintelligence operations for the Ukrainian navy.

The SBU also demanded Russia stop using "psychological and physical pressure" on the Ukrainians -- an apparent reference to interviews of the crewmembers Russia released late Monday. The video broadcast by Russian state television showed three separate interviews with Ukrainian seamen, all of whom agreed with Russian claims they violated its border.

It was not immediately possible to ascertain if the men were talking under duress or had been subject to violence. One of them was clearly reading from a script prepared for them.

Ukraine's foreign minister told The Associated Press on Tuesday he has asked the president of the International Committee of the Red Cross to arrange a visit to the Ukrainian prisoners and he's waiting for a Russian response. He said some of the seamen on the seized ships had been seriously injured in the clash with Russia.

"It's not a political issue here, because we can have an argument about the legal status, but it's about simply concentrating on protecting them and helping them," Foreign Minister Pavlo Klimkin told the AP.

When asked about the Ukrainian seamen broadcasts on Russian TV, Klimkin said "even to put prisoners of war on television is already a crime."

A court in Crimea on Tuesday ordered one of the Ukrainians be kept in custody pending a trial. He could be sent to prison for six years if found guilty. Rulings for possible arrest of 11 more Ukrainian seamen were expected later in the day while the court will rule on the remaining 12 today.

Ukraine said its vessels were heading to the Sea of Azov in line with international maritime rules, while Russia charged they had failed to obtain permission to pass through the narrow Kerch Strait.