Updated to include: Iran's stance on renewing talks with the U.S., Supreme Leader Ayatollah Khamenei's public appearance, the U.S. Supreme Court's ruling on South Carolina's effort to defund Planned Parenthood and Israel stopping aid deliveries from entering northern Gaza.

Iran looks inward and intensifies an internal security crackdown with mass arrests, executions and military deployments. NATO’s European members promise to spend 5% on defense to appease Trump, but can they afford it? U.S. Health Secretary Robert F Kennedy Jr.’s newly reorganized vaccine advisory panel threatens to upend vaccine policy, and possibly coverage. And Zohran Mamdani’s stunning upset in New York City’s Democratic mayoral primary has excited both sides of the political aisle.

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