With renewed violence in Caracas and with US lawmakers poised to approve sanctions against Venezuelan officials, Secretary of State Kerry likely will be seeking Mexican support for a broader diplomatic initiative.
A Russian pullback signals lower tensions in the region, boosts prospects for Sunday's Ukraine elections, and dims threat of tougher US/EU sanctions. But the US has yet to see actual movement of Russian troops.
US pledges its help to try to save almost 300 girls kidnapped in Nigeria last month by the terrorist group Boko Haram. Military aid is not likely, but assistance with intelligence and crisis management could be.