European leaders backed plans to spend more on defence and continue to stand by Ukraine in a world upended by Donald Trump's reversal of U.S. policies.

European Union leaders are holding emergency summit talks to beef up their own military defenses and make sure Ukraine will still be properly protected as Europe faces the prospect of the U.S. cutting

Several European leaders are urging their countries to change to a war footing as the United States’s support for Ukraine wanes. The diplomatic fallout from the Oval Office spat between President Donald Trump and Ukrainian President Volodymyr Zelensky has triggered panic in European capitals.