Obama on Afghanistan: 'We will not miss a beat'

President Barack Obama said Thursday he is "insisting" his national security team be unified on his Afghanistan policy, and he will be "watching very closely" to ensure they are working together toward success.

Obama, talking to reporters with Russian President Dmitry Medvedev, said that despite his decision to ouster Gen. Stanley McChrystal and replace him with Gen. David Petraeus, he is confident the mission will continue seamlessly.

"We will not miss a beat," Obama said.

The president pointed out that Petraeus was in on the planning for the White House's Afghanistan strategy, and the head of U.S. Central Command is already familiar with the players on the ground in Afghanistan.

Obama stressed again he is "insisting on unity of purpose" within his national security team after McChrystal resigned following unflattering and inflammatory comments he made about administration officials to a reporter from Rolling Stone magazine.

"So our team is going to be moving forward in sync," Obama said. He added: "That's what I expect, and that's what I believe I will receive."

The president does not appear to be looking to replace any other members of his Afghanistan team.

"I'm confident that I've got a team in place that can execute," Obama said.

Still, he said, he "will be watching very closely" to ensure his team is carrying out the mission.