9 AM ET: Deadly start to 2023, movement on tanks, Twitter sued again & more

There's already been at least 39 mass shootings this year in the US. Germany is showing signs it's starting to budge on sending tanks to Ukraine. 2022 was a deadly year to be a journalist. Moving vigorously can lead to better brain health. Plus, the British Monarchy is suing Twitter... kind of.To learn more about how CNN protects listener privacy, visit cnn.com/privacy