Urbanization continues to drive informal settlement growth on land exposed to hazards such as landslides, increasing risk among low-income populations. Though technical and social ways of managing landslide risk are known, in developing countries these measures are often difficult to implement because of complex social, economic, political, and institutional reasons. We present the findings from a pilot research project in Medellín, Colombia, which aimed to explore the scope for, and acceptability of, landslide risk-reducing strategies for informal settlements from the community and state perspectives; understand the barriers to landslide riskreducing strategies; and identify politically and practically viable approaches to such strategies within a wider and more complex context of social and physical risk in the area. Focusing on the latter objective, we compare two forms of community-local government spaces for negotiation that were used during the project (a Cabildo Abierto and a joint local government-community Working Group), applying Fung's "democratic cube" to their analysis. This helps understand their different nature, but also raises questions about the ability of Fung's model to address governance arrangements related to so-called informal settlements in the Global South, and the need to revisit this model drawing on context-sensitive approaches and insights on informal governance arrangements from the growing literature on service coproduction. The key conclusions highlight the importance of overcoming the state-community stand-off over land occupation rights in Medellín, which is also found in self-built neighborhoods worldwide, by reorienting the problem away from conventional longterm land use planning issues toward issues of safety in the short and medium term, together with an incremental approach, in opening up opportunities to develop wider negotiated mitigation of landslide risk at a more strategic level involving both community and local government.

Recent experiences of socio-environmental disasters in Latin America have demonstrated the ineffectiveness of the state as a social actor in the organisation, coordination and implementation of adequate public policies to face these emergencies. This affects the most vulnerable urban areas, leading to unequal levels of impact from crises and disasters within cities. As a response, local collective actions, led by citizens, have emerged to manage risks. In Medellín, Colombia, in the context of the current COVID-19 crisis, our research identified a diverse repertoire of collective actions within informal, vulnerable communities, including collaboration towards improving food security, sanitation, pedagogy for self-care and prevention, and financial aid. Although these actions have had limited scope within the context of the ongoing COVID-19 pandemic, they demonstrate the need to promote a more proactive interaction between society and the state, based on a series of agreed interventions, promoting the exchange of knowledge and articulation of actions in the production and improvement of informal urban areas. This research explores how these collective actions have developed through a set of semi-structured interviews with community leaders and key actors in Medellín, with a view to identifying lessons for state-community dynamics in relation to disaster risk management and achieving a more integrated approach to improving habitat conditions within vulnerable urban areas. This work demonstrates that vulnerable communities in informal urban settlements can actively address their exposure to risk through locally-oriented, bottom-up collective actions. However, key linkages with institutional frameworks are needed to strengthen state-community dynamics and facilitate sustainable, inclusive and equitable development in cities.