Deepening transatlantic discord could leave space for authoritarian powers to reshape international norms in their favour.
The dramatic Oval Office showdown between US President Donald Trump and Ukrainian President Volodymyr Zelenskyy on February 28 sent shivers through the transatlantic alliance, breaking down diplomatic efforts and economic negotiations in real time.
Its fallout draws attention to a larger crisis for the rules-based liberal international order.
Washington DC has traditionally positioned itself as the defender of democracy, free markets, and security alliances.
However, the Trump administration's mercurial approach to foreign policy, coupled with the divisive rhetoric surrounding Ukraine, weakens this image.
The rift with Kyiv not only affects Ukraine's survival but also signals that America's international commitments may be subject to domestic political calculations.
Shifts in US-Atlantic alliance commitments
Trump's refusal to offer assurances to Ukraine, coupled with his broader scepticism towards NATO, suggests that Washington may be turning toward a more pragmatic approach to transatlantic relations.
This uncertainty has spurred European leaders to consider bolstering their own defence initiatives.