[ntbone]

Originally Posted by vuedoc

Question:

If Nero is out for the Federation, why not go farther back in time to prevent it's foundation?

answer

According to "Star Trek Countdown", Old Spock and Nero travel through time through a black hole that Spock creates to absorb a star that could threaten to destroy Vulcan. So their traveling through time is purely accidental, and coincidental since it puts them in Kirk and Spock's academy days. Purely coincidental.