Pro-Iranian hackers are targeting sites in the Middle East and starting to stretch into the United States during the war. Hackers supporting Iran claimed responsibility for a significant cyberattack against a U.S. medical device company. They've also tried to penetrate cameras in Middle Eastern countries to improve Iran's missile targeting and targeted data centers in the region. National security and cybersecurity experts say Iran's government will look to leverage its cyber capabilities against the military dominance of the United States. American ports, waste water treatment plans and power stations are among the most likely targets.

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California Gov. Gavin Newsom says there's no imminent threat to the state from Iran. ABC News says the FBI warned California that Iran had aspired to send drones to the West Coast in retaliation for war. The FBI later released text of the alert, which noted that the information was based on "unverified information." The White House now says, "No such threat from Iran to our homeland exists." Newsom says California and various agencies plan for worst-case scenarios. Police in Los Angeles and San Francisco say they are monitoring world events for any risks.

President Emmanuel Macron is updating France's nuclear deterrence doctrine as Europe worries about Russia and doubts U.S. protection under Donald Trump. On Monday, Macron will speak at a French submarine base and signal how France thinks about using nuclear weapons. The war in Ukraine and Russia's nuclear threats have shaken Europe's security assumptions. Analysts say some Europeans are looking to France for a backup nuclear guarantee. France is the only nuclear power in the European Union. Macron last laid down policy in 2020 and said France has fewer than 300 warheads. Experts are listening for any stronger promise to protect allies.

The last remaining nuclear arms pact between Russia and the United States is set to expire this week, removing any caps on the two largest atomic arsenals for the first time in more than a half-century. The end of the New START Treaty sets the stage for what many fear could be an unconstrained nuclear arms race. Russian President Vladimir Putin has declared his readiness to stick to the treaty's limits for one more year if Washington follows suit, but U.S. President Donald Trump has been noncommittal about extending it. Arms control advocates have warned that the treaty's termination would fuel a renewed arms race.