Retired Lt. Gen. Doug Lute told ABC News Live expanding a blockade on Iran and applying economic pressure "won't be simple." [▻](https://video.twimg.com/ampli

Retired Lt. Gen. Doug Lute told ABC News Live expanding a blockade on Iran and applying economic pressure "won't be simple." [▻](https://video.twimg.com/amplify_video/2119901875176689665/vid/avc1/1080x1920/zNFVtGW_9wOs3NmM.mp4) https://video.twimg.com/amplify_video/2119901875176689665/vid/avc1/108…