Lithuania's President Vows To Stick To Kaliningrad Restrictions.

Lithuanian President Gitanas Nauseda: "It is absolutely clear that Lithuania must implement and will implement EU sanctions." (file photo)

Lithuanian President Gitanas Nauseda has stressed that his Baltic country "must" and "will" enforce EU sanctions on Russian goods amid harsh rhetoric from Moscow over Vilnius's recent restrictions affecting the Russian exclave of Kaliningrad.

He called for an "urgent" start to consultations with the European Commission to protect Lithuania's interests and international obligations in the shadow of sanctions against Ukraine's "aggressor."

Russia this week summoned an EU envoy to "strongly" protest and threaten unspecified "retaliation" over the overland curbs on shipments to its sliver of land between Poland and Lithuania.

"It is absolutely clear that Lithuania must implement and will implement EU sanctions," Nauseda, whose country was reoccupied by Soviet forces at the end of World War II and regained independence in 1990, said via Facebook.

"Lithuania must maintain and will maintain control of goods transported through its territory and there can be no talk of any 'corridors' as well as any thoughts of degrading Russia in response to Kremlin's threats," he said.

Vilnius shut the route for transport of steel and other ferrous metals, which it says it is required to do under EU sanctions that took effect on June 18. The EU imposed the punitive measures on Russia after it launched its ongoing invasion of Ukraine on February 24.

Kaliningrad's Moscow-backed leadership has said more than half of the exclave's imports are affected by the Lithuanian blockage, which is most acutely felt on rail routes.

Lithuanian officials have rejected Moscow's language of a blockade, as Kaliningrad is Russia's only ice-free port year-round and goods can be shipped there by sea.

"The government must urgently begin consultations with the European Commission so that the implementation of sanctions do not harm Lithuanian interests or international agreements," Nauseda said. "Only by acting together will we achieve that sanctions are painful for the aggressor country."

Russia's Foreign Ministry said on June 21 that EU Ambassador to Moscow Markus Ederer was informed of the "inadmissibility of such actions" and warned "retaliation will follow" if the restrictions aren't removed immediately.

Lithuanian Prime Minister Ingrida Simonyte said it was "ironic to hear rhetoric about alleged violations of international treaties" from Russia, which she accused of violating "possibly every single international treaty."