This NPR News Now update covers a local ceasefire in Ukraine brokered by First Lady Melania Trump, an analysis of disinformation linking French student protests to immigrants, and a study on AI's role in political division ahead of midterms. The broadcast also reports that the Justice Department has halted information sharing on the deaths of two Americans in Minnesota and opened a probe into Corey Lewandowski. Additionally, experts urge broader lung cancer screening for non-smokers following Pope Leo's diagnosis, while the Vatican confirms the Pope will miss an upcoming peace conference du…