petr, some of your account is factually incorrect. These links are for you:

http://www.cactus48.com/1967war.html

http://news.bbc.co.uk/hi/english/static/in_depth/world/2001/israel_and_palestinians/timeline/1973.stm

The key thing to notice in the BBC article, is the fact that the Yom Kippur war was for the purpose of regaining territory that Israel took from Egypt and Syria when it pre-emptively attacked them in 1967.