German Chancellor Angela Merkel on Thursday said there is "no military solution" to the conflict between Moscow and Kiev, after Ukrainian President Petro Poroshenko urged NATO to deploy warships to a sea shared by the two nations following a naval confrontation in waters off Crimea.
Merkel blamed the crisis on Russian President Vladimir Putin, but said "issues like these can only be solved by sensible dialogue".
Talking to Germany's Bild newspaper, Poroshenko said: "Germany is one of our closest allies and we hope that states within NATO are now ready to relocate naval ships to the Sea of Azov in order to assist Ukraine and provide security."
"We cannot accept this aggressive policy of Russia. First it was Crimea, then eastern Ukraine, now he wants the Sea of Azov. Germany, too, has to ask itself: what will Putin do next if we do not stop him?"
In a tweet later, Poroshenko said his country would impose restrictions on Russian citizens in Ukraine. His office could not immediately confirm what those restrictions were.
A NATO spokeswoman did not comment on Poroshenko's request for warships, but said that "since Russia's illegal annexation of Crimea in 2014, NATO has substantially increased its presence in the Black Sea".
The Kremlin said Poroshenko's request looked designed to cause more tensions in the area. Putin accused Poroshenko of creating the naval "provocation" to boost his ratings ahead of the 2019 elections.
Ukraine's Infrastructure Minister Volodymyr Omelyan accused Russia of imposing a de facto blockade on two Ukrainian ports on the Sea of Azov by barring vessels from leaving and entering the sea via the Russian-controlled strait of Kerch, the Guardian reported.
The Kremlin denied it was restricting shipping, saying it had not heard of any problems. If there were any delays they were due to bad weather rather than politics, it said.
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