Particularly important are donors' commitments to "Respect partner country leadership and help strengthen their capacity to exercise it" and to “Base their overall support — country strategies, policy dialogues and development co-operation programmes — on partners’ national development strategies” (OECD, 2005: paras. Donors have also committed themselves to “ensure that existing channels for aid delivery are used and, if necessary, strengthened before creating separate new channels that risk further fragmentation and complicate co-ordination at country level” (OECD, 2008: para. However, the opposite has been the case in the context of climate finance, giving rise to an extraordinarily complex financial architecture that represents a significant obstacle to LDCs' access to finance, as well as unnecessary costs, loss of economies of scale and administrative burdens.