United Nations Secretary-General, Antonio Guterres, says the famine in Gaza City is a 'failure of humanity' after a UN-backed body raised its food insecurity status in parts of the territory to the most severe. Also: FBI agents search the office and home of President Trump's former national security advisor John Bolton; the head of NATO has called for robust security guarantees for Ukraine; and scientists discover a new species of dinosaur with a sail-like structure along its back.

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