The Islamic State has been nearly defeated and migrant crossings to Europe have declined, so why is Libya’s state failure so troubling?

The Gulf nation’s ground troops have cultivated alliances in Yemen with local armed groups, but its ability to shape the civil war’s outcome is limited.

Iran could restart aspects of its nuclear program if President Trump declines to renew sanctions waivers this month, leaving major powers with few options for monitoring or restricting it.

Military threats to deter chemical attacks have so far failed to restrain the Syrian regime, and they risk escalating the horrific conflict even further.

Averting famine will require Saudi Arabia to permit the resumption of commercial shipping of food and fuel to the besieged country.