The most common and most likely answer to this crossword clue is the 7 letter word REGIMES
I've seen this crossword clue in The Daily Telegraph
R
E
G
I
M
E
S
Buddy explains!

The straight part
We know that "Governments" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case governments = regimes.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does REGIMES mean?
REGIMES noun- Mode of rule or management.
- A form of government, or the government in power.
- A period of rule.
- A regulated system; a regimen.
- A division of a Mafia crime family, led by a caporegime.
- A set of characteristics.