National Resources are the resources which belong to the people of a nation :
The country has legal powers to acquire even private property for public good. For example, Urban development authorities. All the minerals, water, forests, wildlife, land within the political boundaries and oceanic area upto 12 nautical miles from the coast termed as territorial water belong to the nation.
International resources are the resources which are regulated by some international institutions. The oceanic resources beyond 200 nautical miles of the exclusive economic zone belong to the open oceans and no individual country can utilise these resources without the consent of international institutions e.g. India has the right to use the manganese nodules from the bed of the Indian ocean which lie beyond the exclusive economic zone.