President Obama addressed the U.N. General Assembly on Tuesday with a heavy focus on the wave of anti-U.S.-government protests that have swept Muslim countries and the killing of U.S. Ambassador Christopher Stevens and three staffers in Libya. Obama again condemned the anti-Islam film that set off the unrest, but said no speech can justify violence.

President Obama: “I have made it clear that the United States government had nothing to do with this video, and I believe its message must be rejected by all who respect our common humanity. It is an insult not only to Muslims, but to America, as well. But in 2012, at a time when anyone with a cellphone can spread offensive views around the world with a click of a button, the notion that we can control the flow of information is obsolete. The question then is, how do we respond? And on this, we must agree: there is no speech that justifies mindless violence.”

Obama also addressed ongoing tensions with Iran, criticizing Tehran for backing the Assad regime in Syria and saying he hopes to resolve the nuclear standoff through diplomacy.

President Obama: “Just as it restricts the rights of its own people, the Iranian government continues to prop up a dictator in Damascus and supports terrorist groups abroad. Time and again, it has failed to take the opportunity to demonstrate that its nuclear program is peaceful and to meet its obligations to the United Nations. So let me be clear: America wants to resolve this issue through diplomacy, and we believe that there is still time and space to do so.”