The Washington Post has published an exclusive report that Iran is arming pro-Iranian factions in Syria for a new phase of deadly attacks against U.S. forces.

Iran and its allies are recruiting and training troops to use more powerful, armor-piercing explosives, the newspaper says. Such attacks would mark an escalation of Iran's long-running campaign of using proxy militias to launch missile strikes and using drones against the United States. According to a secret intelligence assessment prepared last January, Russian, Iranian and senior Syrian military and intelligence officials met in November 2022 to establish a "coordination center" to guide the campaign.