NBC News Senior National Security Correspondent Courtney Kube explains the alleged breach of protocol by top national ...

Top national security officials for President Donald Trump, including his defense secretary, texted war plans for upcoming ...

States and cities across the country are grappling with how to stay on the right side of government transparency laws as the use of encrypted messaging apps becomes more widespread.

Durov was detained by French authorities last summer on allegations tied to organized crime. The charges against him included ...