Ukraine has sought to clean up defence spending as the war grinds towards its fourth year, an effort that has taken on greater importance as US President Donald Trump considers whether to continue supporting Kyiv's military. For in-depth analysis and a deeper perspective on Russia's war on Ukraine, Western military support for their ally, and Europe's determination, namely Germany, to "stand by Ukraine till the end", FRANCE 24's François Picard welcomes former Ukrainian Foreign Minister Dmytro Kuleba. He is now a professor, teaching 'diplomacy in wartime' at Sciences Po University in Paris.