Russian President Vladimir Putin said on Wednesday that ​Russia will respond in kind if European countries ‌seize Russian merchant vessels, the TASS state news agency reported.

The comments come as the EU intensifies pressure on Russia’s so-called ​shadow fleet, expanding sanctions against hundreds of ​vessels and detaining some ships and their crews ⁠for checks. Some European governments have said they are ​exploring tougher maritime enforcement measures against ships suspected of ​sanctions evasion.

TASS cited Putin as saying of those measures: “Of course, this is nothing short of piracy and banditry. And if ​this is actually put into practice, we will be ​forced to respond in kind.”

He said, according to TASS, that ‌any Russian retaliatory action would not be limited to those waters where Russian ships were seized, but “will happen wherever we deem it necessary and appropriate.”

Putin was speaking from Russia’s ​far eastern ​island of Sakhalin, ⁠where he is observing military exercises. TASS also cited him as accusing NATO of making ​inroads into the Asia-Pacific region and creating tension ​in the ⁠Arctic.

“NATO is making inroads into the region, new military-political blocs are being formed, and new weapons systems that ⁠pose ​a threat to Russia are being ​deployed or are slated for deployment,” it cited him as saying.