All summer long, Dr. Marvia Jones kept coming back to the same unsettling numbers. As director of the Kansas City Health Department, she watched data showing that far too many public school students were not up to date on the vaccinations they needed before the new school year. If things didn’t change, children could be sent home when classes resumed in late August — a disruption that would not only interrupt their learning but also create a logistical nightmare for working families. So Jones tried to meet families where they were. She added more vaccine clinics, brought shots to church…

1. Imagine waking up one morning to the news that your neighbor—a close ally, a fellow member of the European Union and NATO—is quietly preparing to invade you. Not a full-scale war, but a “small” land grab, a sneaky annexation of a tiny strip of border territory that has been a point of contention for decades. That is exactly the scenario that a bizarre and elaborate disinformation campaign tried to sell to the people of the Czech Republic in recent days, specifically concerning the area around the twin towns of Cieszyn and Český Těšín, a region that sits right on…