The events of September 11, 2001, set in motion sweeping changes to U.S. intelligence and counterterrorism practices, launched two major wars, and altered Americans’ daily routines. This timeline tra…

The Somalia-based Islamist insurgent group al-Shabaab has proved resilient, committing brazen terrorist attacks at home and abroad despite strategic setbacks in recent years.

In the weeks leading up to the 2020 election, technology firms and the U.S. government took steps to prevent and combat election interference in cyberspace. Nonetheless, there were still a handful of…

In March 2003, U.S. forces invaded Iraq vowing to destroy Iraqi weapons of mass destruction (WMD) and end the dictatorial rule of Saddam Hussein. When WMD intelligence proved illusory and a violent insurgency arose, the war lost public support. Saddam was captured, tried, and hanged and democratic elections were held. In the years since, there have been over 4,700 U.S. and allied troop deaths, and more than one hundred thousand Iraqi civilians have been killed. Meanwhile, questions linger over Iraq's fractious political situation.

Timeline examines foreign policy milestones from Donald Trump’s first three years in office.