Snowden didn't tell much about war crimes. He was the guy that unveiled just how large the NSAs operations are and what they are capable of. And it was very eff

Snowden didn't tell much about war crimes. He was the guy that unveiled just how large the NSAs operations are and what they are capable of. And it was very effective, because since then there was a big move towards encrypting all communications. Nowadays it's almost standard to have end to end encryption in messengers, and the majority of websites support https or are even https-only