On Tuesday, Ukraine launched its largest-ever attack on Russia, deploying more than 300 drones. While Moscow claimed to have successfully intercepted most of the UAVs, some managed to hit their targets, resulting in the deaths of at least three people. Among the targets struck was a monitoring station on the Druzhba oil pipeline, which supplies oil from Russia to Hungary.

In response to the attack, Hungarian Foreign Minister Péter Szijjártó urged Kyiv to cease targeting energy infrastructure that delivers oil to Hungary. Hungary relies heavily on the Druzhba pipeline for its oil imports, and the pipeline was reportedly back in operation by Tuesday afternoon.

“We consider attacks on Hungary’s energy infrastructure unacceptable,” Szijjártó stated. “We call on Ukraine to refrain from targeting energy facilities that supply Hungary. Hungary cannot be held responsible for the war between Russia and Ukraine; we are not to blame for this conflict.”

Although Kyiv and Budapest reached an agreement last year to allow oil to continue flowing through Ukraine’s section of the Druzhba pipeline, Ukrainian Sanctions Minister Vladyslav Vlasiuk accused Hungary of using the “Druzhba pipeline issue as a pretext to block further sanctions against Russia.”

Concerns are growing within the European Union that Hungary may oppose the renewal of the bloc’s sanctions on Russia. The sanctions, which require unanimous approval from all EU members every six months, are set to expire next week. EU member states and Ukrainian officials fear that Hungarian Prime Minister Viktor Orbán may veto the extension of the sanctions.

In a provocative statement, Vlasiuk said that Budapest’s stance is undermining “the unity of the EU.”