" 
 ::::::Clearly, OPSEC thinks it has proof.  Just because they didn't prove it to somebody who won't believe it no matter what, doesn't mean they made ""a claim, without proof"".  It's POV-ish in the extreme to use that verbiage here in the article.  And it's redundant.  We already state that it's a ""claim"", meaning an assertion that is not accepted by all.  That's enough.  - "