Kofi Annan's book, so far, is not that interesting. There are nuggets of cool factoids here and there. For example, from 1945 until 1988, the UN only had a dozen peacekeeping missions.
Today, there are 15 missions. They are:
- Western Sahara, since 1991. The "country" is essentially controlled by Morocco.
- Mali, since 2013.
- Haiti, since Aristide's ouster in 2004. 96 peacekeepers died in the 2010 earthquake. Nepalese peacekeepers caused the cholera outbreak after the quake.
- DR Congo, since 2010.
- Afghanistan, since 2002.
- Darfur, since 2007.
- Golan Heights, since 1974.
- Cyprus, since 1964(!).
- Lebanon, since 1978.
- Abyei (border region between Sudan and South Sudan), since 2011.
- Kosovo, since 1999.
- Liberia, since 2003.
- South Sudan, since 2011.
- India and Pakistan, maintains order in Jammu and Kashmir.
- Ivory Coast, since 2004.
- "Middle East", since 1948.
Apparently, it's a tradition/custom, rather than a rule/law, that prevents soldiers from the five permanent members of the Security Council from serving as UN peacekeepers.
More info here.