At a time when Obama is grappling with crises and conflict in both Europe and the Middle East, the four-country swing also served as a reminder that even those longtime partners still need some personal attention from the president.
Europe is a crucial linchpin in Obama's efforts to rally the international community in opposition to Russia's incursion in Ukraine, but the continent's leaders have concerns about the impact tougher Western sanctions on Moscow could have on their own economy.
Obama departed for Washington Saturday with much left unresolved on each of those matters. Still, officials said the president had made progress during his pilgrimage to Saudi King Abdullah's desert oasis, as well as in his hours of conversations with European leaders.
The president's advisers were particularly bullish about his meeting in the Netherlands with allies from the Group of Seven leading industrial nations, which agreed to indefinitely suspend Russia from the larger Group of Eight.