In this speech delivered at the Royal United Services Institute on 18 June, Polish Deputy Prime Minister and Foreign Minister Radosław Sikorski argues that Europe faces a moment of strategic reckoning. Invoking Winston Churchill's call to duty in times of uncertainty, Sikorski urges policymakers to confront present dangers with clarity and resolve. His speech is both a warning against the risks of appeasement and a call for renewed British-Polish leadership in strengthening Europe's defence.