Ukraine launched an attack on a Russian oil refinery on Thursday, signaling a shift in strategy regarding energy infrastructure. This action followed President Volodymyr Zelenskiy’s announcement that Kyiv is no longer adhering to a ceasefire concerning energy sites, a ceasefire previously announced by former US President Donald Trump. Zelenskiy sharply criticised Trump’s past and potential future willingness to negotiate deals with Moscow, deeming them detrimental to Ukraine’s interests. The strike near Kyiv represents a direct challenge to any informal understandings previously in place. The Ukrainian president’s statement suggests a hardening of Kyiv’s position against accepting externally mediated truces that compromise its security. This move potentially escalates tensions as the conflict continues. The attack underscores Ukraine's determination to disrupt Russia's energy capabilities.