2024 Lukoil oil transit dispute

The Lukoil oil transit dispute was an international relations dispute between Ukraine and the European Union at odds with Hungary and Slovakia regarding the allowance of the pipeline transfer of Russian oil Lukoil through Ukrainian territory. The diplomatic standoff arose when on 24 June 2024, Ukraine tightened sanctions, which were imposed on 21 June 2018, against Lukoil — Russia's largest private oil firm — which included a ban on Lukoil on oil supplies and the assignment of its contractual obligations to supply oil to Hungary and Slovakia through the Druzhba pipeline to other companies.

Source: Wikipedia — 2024 Lukoil oil transit dispute (CC BY-SA 4.0)