When the allegations are made by clowns like Copley, ignoring them is the only sensible course of action.
And the Casey quote I provided speaks directly to that.
So, again, unless you can come up with another source for these allegations, you've got nothing.
And as far as who's an embarrassment to the US, considering the official policy of the United States of America towards Serbia has essentially turned into "Tired of your sh*t", your list needs expanding - greatly.
At some point in time - sooner rather than later - you've got to say 'enough is enough. Kosovo is independent'. That's the position we've taken.
Ring any bells?