Story highlights The White House has yet to make a decision on the options for upping the campaign against ISIS

Several GOP senators blasted what they heard about the new anti-ISIS proposals Tuesday

Washington (CNN) The U.S. is considering increasing its attacks on ISIS through more ground action and airstrikes, Defense Secretary Ashton Carter said Tuesday.

Carter told the Senate Armed Services Committee that the U.S. "won't hold back" from supporting partners carrying out such attacks or from "conducting such missions directly, whether by strikes from the air or direct action on the ground."

The White House, however, has yet to make a decision on the options for upping the campaign against ISIS, according to defense and administration sources. They said that further involvement on the ground was one of the possibilities being presented.



RELATED: Latest ISIS news The ground option Carter mentioned to the committee was part of a three-prong effort -- which he dubbed the "three Rs" -- to adapt the U.S. policy on countering ISIS.

In addition to increased ground action and airstrikes, or "raids," Carter also spoke of the need to increase pressure around the ISIS stronghold of Raqqa in Syria, where "we will support moderate Syrian forces" fighting the terror organization there.

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