>Canonically, Klingons have cloaking devices. Romulans have cloaking
>devices. Whether this is due to them independently developing the
>technology, or through trade, nobody's saying, but I'd guess that the
>Klingons bought it from the Romulans, personally (it's not the type of
>technology Klingons would develop on their own, I would think). But
>other than the Klingons and the Romulans, the only major power that
>has any cloakships is Starfleet, who have a single cloaking ship in
>the Defiant, who got it from the Romulans.

This is what I know of the cloaking device thing. The Romulans orginally developed the cloaking device and traded it to the Klingons for the, I believe D7 cruisers, because the Romulans were in need of 'cheap' warships. And Starfleet, which did construct the Defiant, was able to swing a loaned cloaking device from the Romulans but are required to have a Romulan representitive stationed on the Defiant whenever she left dock.

Now, I could be wrong in some (or all) of these facts so take this with a grain of salt.

~Strife Aileron

Land charred Black, rivers boiled,
Crops and wells alike despoiled,
Mountains levelled, forests felled,
-footprints of the beasts of Keld