The major U.S. drawdown in Afghanistan planned for the end of the year may need to be scaled back. That's the assessment at a Senate hearing with a top General.

FOX News Radio's Jared Halpern has more from Capitol Hill:

By the end of next year President Obama envisioned bringing most troops home and just leaving an Embassy-level military presence in Afghanistan.

A security set-up the top commander in Afghanistan now says need to be re-evaluated.

(Campbell) "When that decision was made in 2014, a lot has happened since then in transition."

General John Campbell points to increased ISIS activity and a resurgent Taliban and al Qaeda.

Current blueprints would drawdown that U.S. military force from nearly 10,000 troops to about 1,000 in 2017.

The President is expected to make decisions about troop levels later this fall.

On Capitol Hill, Jared Halpern, FOX News Radio.