No, he's stating that credible evidence has not been shown, which is a very different thing. It hasn't.
The same as it wasn't when Blair went to war with Iraq on the back of phony US claims.
Really? When Blair accepted American intelligence claims without question and went to war with Iraq, he was accused (rightly, IMO) of being a war criminal and all sorts of things.
Now Corbyn is asking for evidence foor American claims (which, incidentally, contradict evidence provided byu the...