By Janine Davidson and Emerson Brooking
This week, NATO leaders will gather in Wales for the 2014 NATO summit—arguably the most important since the fall of the Berlin Wall. The crisis in Ukraine and the growing challenge from ISIS are sure to dominate the agenda. But as menacing as these threats are, NATO leaders should not forget about Afghanistan, where NATO’s International Stability Assistance Force (ISAF) is struggling to bring this thirteen-year war to an end. As our experience in Iraq should make abundantly clear, the pace and manner by which international troops (and aid dollars) withdraw and the durability of NATO’s commitment to the region will greatly influence what comes afterward.