In response to drone attacks on an oil site in Saudi Arabia Saturday, President Trump tweeted Sunday that there is "reason to believe that we know the culprit," and the United States is "locked and loaded depending on verification." Aramco, Saudi Arabia's national petroleum and natural gas company, said the attacks curtailed output by 5.7 million barrels a day. The Houthi rebels in Yemen, backed by Iran, claimed responsibility for the attacks, but Secretary of State Mike Pompeo said there is "no evidence the attacks came from Yemen." He placed the blame on Iran. Iran denies the allegations. Officials said the drone attacks had to come from the north or northwest, meaning they were launched in Iran, Iraq, or the Persian Gulf, not Yemen.

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