Best of frenemies: Saudi, UAE rivalry bursts into view

But a growing rivalry and struggle for influence has come to a head -- most recently in Yemen -- following years of divergence over a tangle of competing interests that reach from regional waterways to the corridors of power in Washington, analysts say. The once-close relationship between Saudi Crown Prince Mohammed bin Salman and UAE President Sheikh Mohamed bin Zayed Al Nahyan was long seen as the backbone of the alliance between the two Gulf powers. But as their ambitions grew apart and Prince...