In the closest to canon maps that I've been able to find (including Star Trek Star Charts), both the Romulans and Klingons are on the other side of the Federation from the Cardassians. Lots and lots of Federation territory between them. So how did the Klingons invade the Cardassians in any reasonable manner? Even if the Federation's borders were so leaky as to let a war fleet through (cloaked or not), that's still one heck of a long supply line for a war. Even worse if they tried to go around the Federation instead of through. And even if the Federation actively supplies them itself, that's still just a heck of a lot of space to move through. In fact, estimating based on the TNG Writer's Technical Guide, it should take at least 2 years at Warp 9 to get from the nearest Klingon border to the nearest Cardassian border. Even at the unsustainable speed of Warp 9.99 it would take months. A related question is why the Romulans were worried about a surprise attack from the Dominion when, again, even if the Federation didn't oppose them, it would take the Dominion years to get from Dominion occupied space to Romulan space. Is there some sort of explanation for this that I'm missing? It's by far the biggest hurdle to me adopting any of the galactic maps I've found. Or is there some map I've missed that makes more sense?