ABC News’ Chief Global Affairs Correspondent Martha Raddatz reports on the increased threat environment within the U.S. after the Minnesota lawmakers shootings. Plus, the escalating Iran-Israel conflict.

A man posing as a police officer shot and killed a Minnesota lawmaker and her husband in a brazen attack at their home early Saturday, and a second lawmaker and his wife were wounded in a separate sh...

Hortman and her husband were killed, and Minnesota Gov. Tim Walz called it a “politically motivated assassination.”