Administering another country is always a very tricky proposition.
Sentiment: NEGATIVE
The best way for someone to govern is to set an example.
However difficult it may be to bring it about, some form of world government, with agreed international law and means of enforcing the law, is inevitable.
To rule is easy, to govern difficult.
Ultimate authority in a global system remains with sovereigns. Governments will not have it any other way: politicians face instant rejection from their electorate if they allow transnational authorities to dictate terms.
It's not possible for two countries to be the leading dominant political power at the same time.
You cannot govern, you cannot administrate, with an ignoramus.
It is hard to cement any relations with any country based on promises that may not be deliverable.
It is obvious that taking the country from a state of war to being a lawful state won't be easy.
Executive power in any nation arguably has more in common with executive power in another country than with the citizens it should serve.
It is not difficult to govern. All one has to do is not to offend the noble families.