ISIS is vowing to kill Americans on U.S. soil in a frightening new video.
The disturbing, 10-minute video pledges to "repeat September 11." ISIS also warns that it will send suicide bombers and cars filled with explosives to America.
The video, which was released last week, quotes Usama bin Laden and shows images from the Sept. 11 attacks, which claimed the lives of nearly 3,000 people.
Watch the latest video at video.foxnews.com
The new warning comes as the U.S. steps up security for the pope's upcoming trip. Authorities are working overtime to secure event sites and travel routes.