If a public government figure comes out and makes a public statement like that - there will be immediate follow-up for proof/concrete evidence. When the nation

If a public government figure comes out and makes a public statement like that - there will be immediate follow-up for proof/concrete evidence. When the national intelligence agency "independently" makes such a claim, it allows the leadership to defer proof. Additionally, it provides a subtle message of credibility and hints that "they" know something "we" don't.