Jack Teixeira, a 22-year-old former Massachusetts Air National Guardsman, was sentenced to 15 years in prison for leaking classified military documents concerning the Ukraine war. He pleaded guilty under the Espionage Act and faced significant prosecution arguments highlighting the serious national security implications of his actions. Teixeira's defense argued for a lesser sentence, citing his background and intent to share information, while prosecutors emphasized the damage caused by his leaks. The case raised major concerns about the protection of sensitive government information within the military.