The Observer view on JD Vance: spurned in Greenland and humiliated at home, the vice-president should resign

His foolish foreign trip and the response to the Signal chat leak reflect the irresponsibility of White House team

Not for the first time, JD Vance, America's outspoken vice-president, has made a public fool of himself. He insisted on visiting Greenland despite unequivocal statements by the territory's leaders and Denmark's government that he was not invited and not welcome. Vance's trip was confined to a remote Arctic base, where he briefly spoke to a few Americans. Plans to make a wider tour and speak to Greenlanders were cancelled - because Greenlanders did not want to speak to him.

Such hostility is entirely understandable, given the repeated, provocative and disrespectful declarations by Vance's boss, Donald Trump, that the US plans to annex Greenland and may do so illegally and by force. Greenland is a semi-autonomous territory within the kingdom of Denmark. Election results this month showed the vast majority of local people back expanded self-rule or outright independence. They do not want to be Americans.