Okudachron 2150s Romulan Warship Pictorial at Drexfiles

[Praetor]

And the Sino-Russian alliance parallel was almost certainly the intention of the bits reprinted in 'TMoST' from which the idea originates.

 

[Unicron]

Actually, FASA had Klingon vessels being captured by both the Romulans and the Feds, with the Orions occasionally capturing ships as well. It's worth remembering that this was before TNG dealt with the role of honor and politics in Klingon society, and the FASA Klingons are based on those in TOS.