Remember though, in Star Trek all Admirals are corrupt, Presidents are weak and Commodore's, well they're just plain crazy!
The Federation preaches justice and principles to the rest of the galaxy, but when push comes to shove, they'll do what it takes to preserve their own security. Their way of life over all others.
Picard is only one man. He didn't always agree with his superiors, because they often did what they thought had to be done and Picard had to go along with it on occasions.
I'd say Das has RP'd really well. Personally, I wouldn't invade Bajor, but I would've invaded Kurill and I might invade Gornar. It's his game though and he has to do what it takes to preserve Federation security, just like the corrupt admirals and weak presidents (OK maybe not the crazy commodore's ). No difference.
But you know, we all have our own interpretations of how to RP the Federation or the Klingons. We might disagree, but that's fine. That's just the same as Picard and Admiral Nechayev disagreeing about unleashign the Borg virus with Hugh, or displacing the Federation colonists along the Cardassian border.