Gov. Christie targeted President Obama in two national media interviews Tuesday, criticizing the president for saying the intelligence community had underestimated the threat posed by the Islamic terrorist group ISIS.

Christie, who is weighing a run for president in 2016, told CNN he was "disturbed" by Obama's interview with 60 Minutes Sunday, "when he said they underestimated ISIS. It should be 'we," Mr. President. It's your administration. And when you're the leader, you have to be held accountable for what they do."

The Republican governor said Obama's remark "makes people a little less certain of his footing on these things," and said he hoped the president would "correct what I hope was a misstatement."

The White House has defended the comments, saying the president has often spoken of his responsibility as commander in chief.

The CNN interview was taped in Newark, where Christie held an event Tuesday focused on reducing the stigma of drug addiction. He made similar comments about Obama in another interview with Politico.

In the interviews, Christie picked up a line of attack he began Monday as he stumped for Gov. Scott Walker in Wisconsin, asserting that the rise of ISIS had been predicted.

"The president has to stand up and take responsibility and come forward with a plan," Christie said.

But Christie wouldn't comment on whether the United States should send in ground troops. "That's not my decision to make," he said. "It's the president's decision."

Christie took heat from some in his party for praising the Democratic president in the aftermath of Hurricane Sandy – days before the 2012 election in which Obama beat Republican Mitt Romney.

Noting his past support for Obama, Christie told CNN Tuesday, "As I've shown before, if I think the president's doing something well, I don't hesitate to say that he is. But I think the jury's still out on this, because we shouldn't be in this position to begin with."