Chancellor Friedrich Merz of Germany will be visiting London on Thursday to solidify a new Anglo-German treaty aimed at enhancing collaboration in defense, energy, economic affairs, and migration. Unlike the elaborate events that accompanied President Emmanuel Macron's recent state visit to the U.K., Merz's visit signifies an important step in Europe's response to emerging global challenges.

Both nations are reportedly finalizing a treaty that emphasizes mutual defense, which will build upon agreements made last October, allowing for joint military exercises and collaborative weapon development. With Merz, who has swiftly become a crucial player in Europe's security strategy following the return of former U.S. President Trump, Germany is positioning itself as a key ally amid growing European solidarity, particularly in the ongoing conflict in Ukraine.

British Prime Minister Keir Starmer is keen to position the U.K. as a leader in European efforts to support Ukraine against Russian aggression. While treaty specifics are still under discussion, a potential agreement could include mutual defense commitments akin to those recently established between the U.K. and France regarding coordinated nuclear strategies.

Notably, Germany, currently the third-largest supplier of military aid to Ukraine, is poised to increase its military expenditure significantly under Merz's leadership, targeting a 3.5% GDP spend by 2029. This shift marks Germany's most ambitious defense build-up since the Cold War, reflecting a broader commitment to enhancing European security in a time of uncertainty.