They include other ministries and public authorities (e.g. the Ministry of Agriculture and Rural Development, the Water Authority, and the Israeli Land Administration), local municipal and regional authorities, and non-governmental (private or charitable) organisations such as the Jewish National Fund (JNF) and the Society for the Protection of Nature in Israel (SPNI). Several policies are the responsibility of more than one institution. The degree of overlap and conflicts among institutions creates bureaucratic obstacles to efficient implementation and enforcement.