Daniel Yergin, vice chairman of IHS, says Saudi Arabia is taking the lead when it comes to compliance with OPEC's oil production cuts. Gideon Rose, editor of Foreign Affairs magazine, discusses the resignation of National Security Adviser Michael Flynn and what's next for the National Security Council. Shahab Jalinoos, global head of FX strategy at Credit Suisse, says there's more downside risk for the euro as the French election nears. Robin Niblett, the director of Chatham House, says President Trump sees unpredictability as a way to project strength. Finally, Bob Haber, co-founder of Proficio Capital Partners, says investors need extreme diversification.