The shifting geopolitical dynamics of the Russo–Ukraine War since the Trump’s second term presidency are examined, focusing on the European Union’s diminishing role in the Russo-Ukraine War resolution efforts. The analysis explores Trump’s distinct diplomatic strategy, which emphasises bilateral negotiations with Russia and Ukraine, departing from the multilateral approach pursued by the Biden administration. It highlights the marginalisation of the EU in key diplomatic processes, noting how its initial cohesion in supporting Ukraine through sanctions and aid has weakened due to internal divisions and strategic inconsistencies. Additionally, Ukraine’s diplomatic position under President Zelenskyy is considered, as he underscores Ukraine’s sovereignty while expressing concern over the United States’ unilateralism and advocating for greater EU participation. The complex interplay between Ukraine’s dependence on US military assistance and its desire for broader international engagement is explored as a central tension in its diplomatic positioning.