The Good Friday Agreement offers lessons for trying to end the war between Ukraine and Russia.

On the two-decade anniversary of the U.S. invasion, Iraq is weakly governed, leaving it prone to instability and meddling by neighbors—especially Iran.

Wars are fought not only on the battlefield but also in domestic political debates and in histories written after the fact. In the case of the US invasion of Iraq 20 years ago, we are still in this final phase, seeking an elusive consensus about the war’s legacy.

The Islamic Republic of Iran may be on an accelerated schedule for revolutionary decay, at least if compared to the USSR.

The U.S. military detention center at Guantanamo Bay, Cuba, has generated intense debate for two decades, raising enduring questions about national security, human rights, and justice.