US President Donald Trump’s planned summit in Camp David in May to resolve the ongoing Gulf crisis will not be held unless the countries concerned make progress towards resolution of the dispute, reported the Associated Press.

In a fresh push to resolve the crisis, the Trump administration is sending Tim Lenderking, the top State Department official for the Gulf, and retired Marine Corps Gen Anthony Zinni to the region to meet with officials from the countries involved in the dispute, reported Qatar Tribune.

It is understood that Trump's envoys would hand over a message to Gulf leaders for the purpose next week during their visit to the region.

If this is indeed an attempt by Trump to put his foot down, it would signify a significant change in his position having previously taken a view that echoed the stance of Riyadh and Abu Dhabi, according to Middle East Monitor.

Realists in the US administration took the view that the spat was unnecessary and at a time when the administration had gotten everyone in the Gulf on the same page in forming a common front against Iran.

Associated Press quoted US officials as saying that while the White House was pinning hopes on a summit, it told the Gulf countries that there was no point in moving forward if the rival countries are still not on speaking terms.

It was not clear what steps these countries could take that would show enough progress to keep the summit going, but there was a US proposal for Qatar's neighbours to end the air blockade that has prevented Qatari flights from landing in the other nations or using their airspace.