European leaders have long expected Trump would slash US support for Ukraine, but have been shocked by the lack of planning by the administration and the absence of consultation with allies.
The US vice-president, JD Vance, will face calls for greater consultation and coherence when he meets European leaders, including the president of Ukraine, at a security conference in Munich.
Trump has also insisted that any deal would be in consultation with Ukraine, but he has been less emphatic about the involvement of Europeans – an omission that has infuriated leaders of the continent, who believe any Ukrainian settlement will have profound consequences for European security.
The expected showdown came after 48 hours in which senior members of the Trump administration, including the president, unleashed a volley of contradictory positions on how and when negotiations with Russia about Ukraine’s future would be conducted.
Rubio added that the US had an interest in the long-term independence of Ukraine, remarks intended to imply some form of security guarantee for Ukraine.