Moscow, Dec. 2 -- President Vladimir Putin has threatened to "cut off Ukraine from sea," after Kyiv's underwater drone strike on two tankers of Russia's "shadow fleet" in the Black Sea last week.

"The most radical way to stop these actions would be to cut Ukraine off from the sea," Putin said as reported by TASS, Russia's leading news agency.

Putin further termed Ukrainian attacks as "piracy" and stated that Russia will consider "retaliatory measures" against "ships from countries" that are supporting Ukraine's piracy.

"Ukrainian attacks on tankers in the Black Sea are piracy: Attacks on tankers not even in neutral waters, but in the special economic zone of another state, a third state, are piracy," he said.

"Russia will consider 're...