With a war in Ukraine and the U.S. rethinking alliances, Britain and the European Union may need each other more than they thought. Here's what happened at Monday's summit — and what didn't.

Britain and the European Union have hailed a new chapter in their relationship. They have signed fresh agreements on defense cooperation and easing trade flows at their first formal summit since Brexit.

Britain and the EU will ink a new security and trade deal allowing access to European security databases, defense contracts and the EU food market in return for some youth free-movement and rights to fish British waters.