Key Takeaway: The U.S. needs Turkey as an active partner despite its slide into authoritarianism under Turkish President Recep Tayyip Erdogan. The U.S. should adopt an interest-based approach towards Turkey that shapes its behavior in line with shared strategic objectives such as reversing the gains of Iran and Russia in the Middle East. The U.S. needs Turkey to contribute actively as an ally in NATO. The U.S. and NATO face an increasinglyaggressive Russia in the Middle East and Europe.Turkey...