POZNAN — For years, I have taken every opportunity to urge the European Union and its member states to invest more in defense. When Russian President Vladimir Putin launched his full-scale invasion of Ukraine, I repeatedly asked (as a member of the European Parliament) what further proof we would need to recognize the threats facing all of Europe. What would we – as Europeans – do if our security was threatened while our closest ally, the United States, was otherwise engaged? Today, we confron