Disaster in Syria and increasing instability in Iraq, Libya, and Yemen will continue to fuel a refugee crisis that is challenging the world, and in particular the European Union, whose future cohesion is anything but certain. Meanwhile, networked terrorists continue to wreak havoc around the globe, which by the way, is heating up. Cooling down? Oil prices and the Chinese economy, both to potentially destabilizing effect. Add Russia and North Korea to the mix, and it’s a wonder anyone would even want the job of commander in chief. How do the candidates view America’s role and how each would approach the next four years? What lessons might they take from the successes and failures of the Obama administration?