The US secretary of state has called on countries in the Gulf to end their dispute, saying it has gone on too long.
Mike Pompeo has visited Qatar on the latest leg of his Middle East tour.
He was already in the United Arab Emirates, Bahrain and Egypt and is set to visit Saudi Arabia.
Pompeo said that GCC unity is essential to the strategic alliance that the US is trying to forge in the Middle East.
Al Jazeera's Hashem Ahelbarra reports.