"Not caught lying". Regardless of the fact that they have admitted to publishing statements about this which were "incorrect".

Well, it is possible to make incorrect statements without lying, but it is very hard to see how this can have been an instance of that. It's not as if there is any suggestion that some lowly commander broke the rules, and tried to cover up about it. It seems pretty clear from what has come out that the use of white potassium as a chemical anti-personnel weapon was authorised and approved and recorded.

Does anyone have anyone doubt that if people fighting against us were using white potassium in this way it would be seen as anything other than illegal chemical warfare, which could be added to the charge sheet of war crimes?   Actually on second thoughts I suspect the people in charge on our side would probably prefer to avoid paying too much attention to that kind of thing; they'd be likely to see the need to write off the suffering caused to low level soldiers or civilians as a price well worth to avoid embarrassment about their own use of such weapons.