But it would be naïve to toast to victory as the new year dawns. That’s not just because the last mile of defeating a terrorist group can be the hardest one, as the United States learned all too well from the lingering remnants of ISIS’s predecessor, al-Qaeda in Iraq. It’s also because regional challenges that Washington has suppressed by cultivating strategic ambiguity—deliberate vagueness in policy formulation that allows for different audiences to understand the same policy differently, thus allowing flexibility down the road—will become impossible to ignore and difficult to manage.
For more read the full of article at The Atlantic