Violence does not end simply with the signing of a peace agreement and often the rates of criminal and domestic violence have actually risen afterwards. Addressing national issues that led to conflict or that might trigger conflict again and efforts to improve the state's own security capacity is only two factors in achieving citizens’ security and social cohesion. The peace process itself may lead to insecurity as demobilisation of armed groups leave armed, social excluded and frustrated individuals free to continue violence informally. Insecurity can be increased by informal actors, as well as regional and international drivers of instability, such as organised crime, drug smuggling and Illegal arms trafficking. Organised crime's capacity to undermine state authority and basic law enforcement is well known in Latin America. In Guatemala, impunity provided as part of the peace process since 1996, following a 30-year civil war, has allowed former members of the state security apparatus in charge of repression new opportunities for criminal activity. Mexico suffers critical levels of drug-related violence that has led to over 10,000 gang killings in 2010, up from just under 6,600 in 2009; the gangs often command more resources than the state. Building state-society relations and trust are central to the process of combating such violence.