President Barack Obama has asked his national security team for another review of the U.S. policy toward Syria after realizing that ISIS may not be defeated without a political transition in Syria and the removal of President Bashar al-Assad, senior U.S. officials and diplomats tell CNN.

The review is a tacit admission that the initial strategy of trying to confront ISIS first in Iraq and then take the group's fighters on in Syria, without also focusing on the removal of al-Assad, was a miscalculation.

Rep. Ed Royce, chairman of the House Foreign Affairs Committee, said Thursday on CNN's "New Day" that he had also heard that the White House was shifting its strategy, in part because Turkey and other Gulf states - which are hosting refugees from Syria - were pushing for the removal of Assad.

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Russia plans to send long-range bombers to patrol the Gulf of Mexico and the Caribbean, the nation's defense minister said, in what may be Moscow's latest provocative maneuver.

The patrols would bring the flights close to the United States' territorial waters.

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Officials are blaming the Chinese for hacking computers at the National Weather Service. They say four websites and some satellite feeds were compromised.

CNN's Evan Perez reports that the hacking forced them to shut down services to airlines, the U.S. military and Wall Street firms.