Swiss Economic Development Cooperation Under the Economic Development Cooperation of the Swiss State Secretariat for Economic Affairs (SECO), a limited number of programs related to transport in the Swiss partner countries have been supported in recent years. SECO's relevant cooperation includes the refurbishment and transfer of trams from Swiss cities to partner cities in Serbia and Ukraine and the development of CDM methodologies for the transport sector under the Swiss contribution to the World Bank's Carbon Finance Assist trust fund.