- Armament and disarmament
- Conflict and peace
- Peace and development
In 2009, 54 multilateral peace operations were conducted in 34 different locations The annual total of active peace operations fell in 2009, having risen steadily from 2002 to 2008.
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The number of personnel deployed to peace operations increased by 16 per cent over 2008 to reach 219 278 by the end of 2009, 89 per cent of whom were military personnel and 11 per cent civilian staff. With no new operations in 2009, the increase in the number of personnel deployed was due to troop reinforcement for existing operations, most significantly for the International Security Assistance Force (ISAF) in Afghanistan. ISAF was nearly four times larger than the next largest operation, and the number of ISAF troops (84 146) exceeded the total number deployed to the 12 UN peace operations with troops (83 089).
Kirsten Soder (Germany) was a Researcher with the SIPRI Armed Conflict and Conflict Management Programme.
Krister Karlsson (United States) was an intern with the SIPRI Armed Conflict and Conflict Management Programme in 2009–10.