Saudi Arabia said Wednesday that strikes on two of the kingdom's major oil production facilities over the weekend were "unquestionably" sponsored by Iran and came from the "north." Secretary of State Mike Pompeo called the attacks an "act of war," and President Trump moved to "substantially increase" sanctions on Tehran. Saudi officials said surveillance video showed the drone coming from the north, rather than from Yemen, and said the weapon is the same kind that has been used by the Iranian Islamic Revolutionary Guard Corps. Tehran has denied involvement. Trump has not yet provided details on the sanctions, but said an announcement would be forthcoming. Iran reportedly warned it would retaliate against any U.S. action.

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