What were the prospects for world peace at the end of World War II?

If, by world peace, you mean a situation in which there
would be no war or conflict anywhere, I would say there was no realistic prospect
whatsoever.

At the end of WWII, it was not very likely at
all that there would be another big war any time soon.  The end of WWII saw most of the
major countries of the world in very bad shape from the fighting.  Only the US could
really have had the wherewithal to have any chance of fighting another big war
soon.

However, there were many things that made it almost
inevitable that there would be conflicts.  First, there was the issue of communism and
the Soviet Union's desire to create a strategic buffer for itself.  These issues led to
civil wars in places like Greece and Korea (since the Korean War was more or less a
civil war).  Second, there were issues of colonialism and the desire of various
colonized countries to be free.  This led to conflicts around Southeast
Asia.

So, if world peace is a situation with no huge wars,
the prospects were good.  If world peace is a situation with no conflicts at all, the
chances were extremely remote.