Be careful who you’re doing business with. That’s the warning the U.S. Court of Appeals for the District of Columbia Circuit sent this week to multinational drug and device companies doing business in terrorist hot spots around the world. Reversing a lower court, the D.C. Circuit cleared the way Jan. 4 for 21 drug and device companies to potentially be held accountable for doing business with Jaysh al-Mahdi terrorists, operating through the Iraqi Ministry of Health, who injured or killed hundreds of U.S. troops and civilians in Iraq.