In a rare address from the Oval Office Sunday night, President Barack Obama attempted to calm Americans shaken after a couple with reported ties to the Islamic State murdered 14 in San Bernardino, Calif., last week.

He called the shootings a terrorist attack “designed to kill innocent people,” vowing to escalate military action in Iraq and Syria to defeat similar threats to the U.S.

“The threat from terrorism is real, but we will overcome it. We will destroy ISIL and any other organization that tries to harm us,” Obama said in reference to the Islamic State, most commonly known as ISIS.

The 13-minute speech marked Obama’s third prime-time address in the Oval Office since the beginning of his presidency.

He said the terrorism threat has evolved since Sept. 11, 2001, into less complex, but harder to detect, lone wolf-style attacks and remained adamant that the U.S. would not enter into a long-term ground war in Iraq and Syria.

Obama also pivoted to gun control, advocating that Congress bar anyone on the no-fly list from buying a gun and pass legislation that would prevent people from being able to purchase assault weapons.

The address followed sharp criticism that the Obama administration has lacked a plan to deal with the rising threat of terrorism both domestically and abroad, concerns that were heightened after the attacks Wednesday in San Bernardino.

Political pundits immediately took to Twitter to react to the president’s latest plan. Here’s what they said.