National interventions are defined on this page as the programmes and projects that take place within a country. Their coverage could be nationwide or at sub-national level. Generally, most of the nationwide interventions are geared towards addressing constraints affecting the nation as a whole. Examples of such constraints include: policy and institutional constraints; access to agricultural financing and inputs; access to markets and agricultural extension; low agricultural productivity; food insecurity; natural resources problems; and climate change and variability among others. Interventions to address these constraints cut across various agro-ecological zones. Other interventions are targeted towards parts of countries because they aim at addressing issues specific to the target areas.