WASHINGTON (AP) — President Donald Trump wants to bring feuding Persian Gulf leaders to Camp David for a show of solidarity with the United States. But there are strings attached: No breakthrough in the Qatar crisis, no Camp David.

A potential summit of the six-country Gulf Cooperation Council in May at the prestigious presidential retreat in Maryland's Catoctin Mountains will be scuttled unless Qatar and neighbors Saudi Arabia, the United Arab Emirates and Bahrain are on track to resolve the nearly year-long spat. A pair of Trump administration emissaries will deliver the message next week as...