Commentary: How to support Iran's protesters

With Iran experiencing its largest, most widespread protests in years, thoughts in the White House will inevitably turn to Iran’s 2009 “Green Movement,” sparked by what was widely considered to be the rigging of presidential elections by Iranian authorities that year. President Barack Obama’s administration, unsure how to help the protesters and reluctant to scuttle its nascent engagement with Tehran, responded to the demonstrations with diffidence, prompting criticism fr