French, German and Polish foreign ministers to meet amid escalating threats to seize part of Danish kingdom

France has said it is working with allies on how to react if the US were to invade Greenland, amid mounting tension over Donald Trump’s escalating threats to take over the Arctic territory.

The French foreign minister, Jean-Noël Barrot, said the subject would be discussed at a meeting with the German and Polish foreign ministers on Wednesday.

“We want to take action, but we want to do so together with our European partners,” he told France Inter radio.

Denmark has said that should the US – a fellow NATO ally – invade or seize Greenland, which is part of the Danish kingdom, it would mark the end of the western military alliance and “post-second world war security”.