Seeking to restore the Iran nuclear accord, President Biden cannot afford to replicate one of President Barack Obama’s biggest mistakes. Biden must not ignore the role of the Islamic Revolutionary Guard Corps, or the IRGC, in the Iranian economy.

I note this because Secretary of State Antony Blinken will appoint Rob Malley, an Obama administration veteran and head of the International Crisis Group, to be his Iran envoy. Malley’s appointment suggests that while Biden may talk like a centrist, his team is set to take a more radical tack in its policy pursuits. Liberals might celebrate, but Blinken makes a mistake in not seeking a more solid foundation to tackle a very difficult problem set. Let’s be clear about something else. To construct Malley’s choice as an endorsement of diplomacy and castigate his critics as anti-diplomacy is a dangerous straw man: The issue is not that conservative analysts oppose diplomacy but, rather, that many conservatives believe that diplomacy naively crafted could hasten conflict.