How to describe U.S. foreign policy over the last couple of decades? Disastrous comes to mind. Arrogant and murderous also seem appropriate.

Since 9/11, Washington has been extraordinarily active militarily—invading two nations, bombing and droning several others, deploying special operations forces in yet more countries, and applying sanctions against many. Tragically, the threat of Islamist violence and terrorism only have metastasized. Although Al Qaeda lost its effectiveness in directly plotting attacks, it continues to inspire national offshoots. Moreover, while losing its physical "caliphate" the Islamic State added further terrorism to its portfolio.