Italian PM Giorgia Meloni calls Trump's NATO comments about Afghanistan "unacceptable," defending Italy's sacrifice of 53 soldiers killed in the conflict.

Trump said he was uncertain whether NATO would support the United States if assistance were ever requested, comments that many European leaders viewed as dismissive of two decades of allied cooperation.

Denmark is one of the NATO countries that has suffered the highest losses per capita on the front line in Afghanistan, said Prime Minister Mette Frederiksen.