Vladimir Putin warned that Russia is prepared to use all available military means, including strategic nuclear arms.

He tied that warning to any external attack on Russian sovereign territory.

The article centers the remarks on Kaliningrad, a Russian exclave between European Union states.

Kaliningrad depends on road and rail corridors through EU territory for supplies.

The piece says a blockade of those routes could trigger military escalation.

Moscow's position, as described, is that territorial integrity will be defended by any means necessary.

NATO forces near the exclave are described as a standing risk of accidental confrontation.

The article says diplomatic channels are trying to lower tension in the Baltic region.

Read the full article on Putin's Kaliningrad warning and the nuclear remark.