Ukraine planned a provocation in the Kerch Strait, they hoped that their vessels would be sunk by Russians.
“You remember when before (the incident, the High Representative of the EU Federica) Mogherini told them (to Ukrainians): “Do something in order to justify our offensive” in the region. Now the West, who ordered this provocation, is using this opportunity to react on something”.
On November 25 border patrol boats belonging to Russia’s FSB security service seized two small Ukrainian armoured artillery vessels and their crews after shooting at them, wounding several Ukrainian servicemen. Russia argued that they were in Russian waters.
However a bilateral treaty between Russia and Ukraine, signed in 2003 and ratified by Russia in 2004, governs the use of the Kerch strait and the Sea of Azov, which in the treaty is considered to be the “internal waters” of both Russia and Ukraine.