British Prime Minister Keir Starmer has called on European leaders to unite in ensuring peace in Ukraine and maintaining stability across Europe. Speaking at a conference alongside Ukrainian President Volodymyr Zelensky and French President Emmanuel Macron, Starmer emphasized the need for stronger defense cooperation through new alliances. He described the situation as a ‘once-in-a-generation challenge’ and a matter of security for every European nation. Both Macron and Starmer are considering forming a new security alliance, seeking support from former U.S. President Donald Trump.