BOSTON, Nov 12 (Reuters) - Massachusetts Air National Guard member Jack Teixeira was sentenced on Tuesday to 15 years in prison for leaking online highly classified U.S. military documents, including some related to Russia's invasion of Ukraine.

A federal judge on Tuesday sentenced former Massachusetts Air National Guardsman Jack Teixeira to 15 years in prison for stealing classified information and sharing it online.

A federal judge sentenced a Massachusetts Air National Guard member to 15 years in prison Tuesday for leaking classified military documents about the war in Ukraine, actions prosecutors said put the country's national security at risk,

The 22-year-old Air National Guard member admitted he illegally collected sensitive secrets and shared them with other users on Discord.

After pleading guilty to the most consequential national security breach in years, Massachusetts Air National Guardsman Jack Teixeira faces 15 years in prison. He leaked secret reports of the war in Ukraine on the social media platform Discord.

The Discord leaks rocked the U.S. national security establishment, revealing the speed with which top-secret materials can spread online.

Prosecutors said Jack Teixeira "perpetrated one of the most significant and consequential violations of the Espionage Act in American history."

Jack Teixeira, a US Air National Guardsman who leaked Pentagon documents last year in one of the highest-profile intelligence cases in recent years, has been sentenced to 15 years in prison. Teixeira,