Joby Warrick

Momentum is building to hold Syrian officials accountable for the alleged use of sarin and other deadly chemicals against civilians.

The Gaza conflict has re-energized old fundraising networks with ties to militant Islamist groups and causes, including groups accused of raising money in the past for al-Qaeda, current and former U.S. counterterrorism officials say.

Six years after the Trump administration withdrew from the Iran nuclear accord, Tehran is rapidly accumulating enriched uranium, some of it very close to weapons-grade.

Intelligence officials say Tehran’s growing partnership with Moscow is strengthening the capabilities of both countries.

Hundreds of new centrifuges would triple Iran’s uranium enrichment capacity at a deeply buried underground nuclear facility.

A U.S.-led sanctions campaign aimed to force Syria’s brutal leaders to step aside. A multibillion-dollar illicit drug industry arose to preserve their grip on power.

Tehran is chasing deals with two Chinese companies that specialize in small satellites with powerful cameras. Intelligence assessments worry about military applications.

Faltering Russian drones point to modest successes in Western sanctions to block Moscow’s access to technology. Yet, aided by covert operatives, Russia’s weapons production is soaring.

A string of stunning victories has spurred White House worries about a “catastrophic success” in Syria if Islamist fighters gain control. But experts say the rebels have changed.

The Assad regime hid some of its deadly nerve agents from inspectors. With Syria in chaos, finding out what happened to the arsenal is a top priority.