US says Ukraine return to pre-war borders 'unrealistic'

The new US defence secretary has delivered an uncompromising message to Ukraine three years after Russia's full-scale invasion began, saying Nato membership is unrealistic. We get a response from Ukraine's former prime minister.Also on the programme: A BBC investigation has uncovered allegations that the energy giant Shell ignored repeated warnings that a one-billion-dollar clean-up operation of polluted land in southern Nigeria has been beset by problems and corruption and why a Dublin city councillor is campaigning for the removal of key lockboxes.(Photo: US Defence Secretary Pete Hegseth speaks at a meeting of the Ukraine Defence Contact Group on the eve of a Nato defence ministers' meeting at the alliance's headquarters in Brussels, Belgium, 12 February, 2025. Credit: Johanna Geron/Reuters)