The ongoing US presidential election raises concerns in Europe about a potential Donald Trump victory, which could disrupt EU relations on security, aid for Ukraine, and trade tariffs. Analysts suggest that while Democratic candidate Kamala Harris may maintain the status quo, Trump’s isolationist policies and criticism of the EU could lead to significant changes, including potential cuts to aid for Ukraine and increased trade tariffs. The future of US-EU relations hangs in the balance, with uncertainty surrounding Trump's proposed policies.