Even if negotiation with one group is successful others will take their place  Terrorist groups are rarely static, they change, evolve, and break up. Negotiating with one group may create peace with that group while at the same time causing a split that creates another group that is more willing to use violence. This is what happened in Northern Ireland where the peace process tamed the IRA and spawned the Real IRA, [1] a group that was more even more willing to kill innocents than its predecessor through attacks such as the Omagh bombing which killed 29 people in 1998. [2]  [1] Moran, Michael, ‘Terrorist Groups and Political Legitimacy’, Council on Foreign Relations, 16 March 2006,   [2] Elliott, Francis, ‘Real IRA admits to Omagh bomb and disbands’, The Telegraph, 20 October 2002,