On 25–27 September at the UN Summit, world leaders will accept Sustainable Development Goals to set up the agenda for development cooperation until 2030. The goals underline the inextricable link between development and climate, downgrade the role of official development assistance at the expense of other financing, and engage new instruments and partners, including the private sector and civil society, in the mobilisation of resources. As a result, the EU will need to step up its support for developing countries for its own security and stability and Poland can recognise the importance of this dimension in its external relations.