Lithuania's foreign minister traded barbs Thursday with his Hungarian counterpart after Budapest imposed an entry ban on a Ukrainian military commander accused of involvement in attacks on a key oil pipeline.

Hungarian Foreign Minister Péter Szijjártó announced on X that Hungary would ban the commander of the Ukrainian military unit he said carried out "extremely severe attacks against the Druzhba oil pipeline". He described the strikes as "an attack on Hungary's sovereignty, endangering our energy security".

Lithuanian Foreign Minister Kęstutis Budrys called the move "a shameful act".

"Hungary's decision to put an entry ban on a defender of Ukraine, fighting against Russian terror, is a shameful act," Budrys wrote on X. He thanked the commander, known as Magyar, for defending Ukraine against "Kremlin missiles and drones", and said Lithuania's doors "will always be open" to him.

Szijjártó fired back, saying it was "shameful" for Lithuania to praise actions that threatened "the energy security of a fellow EU member state".

Budrys responded that he fully supported European Union energy security but argued it could only be guaranteed without reliance on Russia. "We have achieved full energy independence, we know how, and we can help Hungary do the same - if there is such a will, of course," he wrote.

The exchange came as tensions escalated between Hungary and Ukraine. Budapest has accused Kyiv of undermining its sovereignty by targeting Russian energy infrastructure that feeds into Hungary via the Druzhba pipeline.

Ukraine, in turn, accused Hungary of "moral decay".

Relations between the two countries have sharply deteriorated since Russia's invasion of Ukraine more than three years ago. Hungarian Prime Minister Viktor Orbán has maintained ties with Russian officials and has opposed Kyiv's push to join the EU.