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We focused on the barriers to the implementation of enabling environments for sustainable urban drainage systems (SUDS) in Belarus, Russia, and Ukraine. Based on interviews and desktop research, we analyzed overall framework conditions in these countries as well as implementation practices in three cities. Our findings demonstrate that the main problem was the deficit of strategic foresight for urban development. SUDS are mostly promoted by NGOs and fueled by international donors, and this represents a major barrier to their implementation, as NGOs and 'traditional' epistemic communities are often not connected. Successful examples of SUDS are missing, often due to regulatory environments forcing SUDS development teams to take suboptimal decisions. In order to be taken seriously by key stakeholders SUDS need to appear in national policy documents. Furthermore, the overall successful implementation of SUDS needs robust governance frameworks while many structural issues are direct results of governance deficits. [ABSTRACT FROM AUTHOR]

• Dacha is an important peri-urban land-use form in Belarus, Russia and Ukraine. • Legacies of the USSR past determine much of dacha's socio-ecological metabolism. • Since the USSR collapse dacha development pathways in Eastern Europe had diverged. • Transformative change requires adaptive approaches to dachiks' behavioural dynamics. • No "one size fits all" governance approach can be recommended for Eastern Europe. Dachas (collective gardens with summer houses in post-Soviet countries) is one of the most common features of peri-urban landscapes within the region that is the erstwhile USSR, with dacha conglomerates constituting half of the areas in the exurbs of major cities. In Belarus, Russia and Ukraine dachas largely preserved their original form and function. Arguably, they are at the turning point now, and can be further transformed sustainably if appropriate incentive structures will be created within national governance systems. The central objective of this study therefore is to understand the origin and transition of dacha's form, process and function in terms of their environmental and social impact, as well as opportunities for transformative change towards sustainability under various governance conditions in the three countries. Building on field data from three suburban locations in Belarus, Russia and Ukraine, as well as analysis of applicable regulatory frameworks and institutions in the three countries, we analysed social and behavioural background of dachas , management practices relevant to their environmental footprint, as well as governance frameworks, actors and power relations. Findings were further discussed in terms of governance barriers and solutions for sustainability transformation of dachas in a broader context of peri-urban transformation, and provide a comparative perspective across Eastern Europe. As such, none of the pathways have emerged as better than the rest in terms of sustainability. Variability of socio-economic and political contexts found in the region suggests that no "one size fits all" governance approach can be recommended. Any solutions paving the way for transformative changes would require proper information and knowledge systems with a smoother regulatory framework, and a purposeful restructuring of existing actor relationships. [ABSTRACT FROM AUTHOR]