"Máme novou vládu."

Translation: We have a new government.

[mzOWNt]

Why not - We have the new government. Thanks

[loudastepan]

Proc nejde: we have a new reign?

[BoneheadBass]

I'm native AmE, and "reign" sounds very weird here. I wouldn't expect to hear it much, other than when speaking about historical periods/figures, such as when referring to the period of time during which a monarch is/was ruling as, for example, in "during the reign of Queen Elizabeth the Second."