When Donald Trump returned to the White House last year, Italian Prime Minister Giorgia Meloni was the only European leader to attend the inauguration.Seventeen months later, their relationship is publicly breaking down, as the two right-wing leaders trade barbs on social media.Trump's relationships with traditional European allies have further strained in his second term, and he's become increasingly unpopular among voters in much of Western Europe The deterioration of the relationship with Meloni raises questions about who, if anyone, still has the US president's ear in Europe