CNBC Daily Open: Oil worries flare as tech's winners split from the pack

Renewed Middle East tensions are in focus, after Iran reportedly attacked a cargo ship, OPEC faces potential exit of Iraq, and Iran and the U.S. disgree over funds use.

By CNBC · CNBC

Renewed Middle East tensions are in focus, after Iran reportedly attacked a cargo ship, OPEC faces potential exit of Iraq, and Iran and the U.S. disgree over funds use.