An Israeli airstrike triggered a fire that killed dozens of people in a tent camp in the Gazan city of Rafah. Condemnation has been swift. French President Emmanuel Macron called on Europeans to protect themselves more strongly against enemies and not just rely on the USA. U.S. President Joe Biden honored fallen service members during the 156th observance of Memorial Day in the U.S. And it’s National Hamburger Day in the U.S. We’ll look at how it was invented and how far and wide it has spread around the globe.