Secretary of State Hillary Rodham Clinton says the Obama administration was "appalled" by Iran's postelection crackdown on protesters.
In a wide-ranging policy address to the Council on Foreign Relations in Washington, she's also warning the Tehran that they have limited time to accept the administration's offer of engagement. Without setting a deadline, Clinton said Washington remains "ready to engage with Iran, but the time for action is now."
She says the hard-line regime is risking new penalties and increasing isolation over its nuclear program.
Clinton's speech marked a return to a full public schedule after an elbow injury sidelined her for the past month. She defended the outreach to Iran and other adversaries, saying diplomacy is not an alternative to a national security arsenal, but the U.S. "cannot be afraid or unwilling to engage."