In his June 14 address to the nation, President Obama attributed Omar Mateen’s attack on patrons of Orlando, Fla.’s, Pulse nightclub to “homegrown extremism,” saying “we currently do not have any information to indicate that a foreign terrorist group directed the attack.”

While Obama acknowledged that the Islamic State has called for attacks around the world against “innocent civilians,” he suggested these calls were incidental, emphasizing that Mateen was a “lone actor” and “an angry, disturbed, unstable young man” susceptible to being radicalized “over the Internet.”