National defense is the job of the federal government.
Federal. The clue is the word "national". Anything called national is for the country.
Zekerijah Osmic is the Minister of Defense for Bosnia and Herzegovina's National Government.
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The Department of Defense, which is charged with national defense (and some would say the Department of Homeland Security as well) is part of the Executive branch, answering directly to the President of the USA.
The Federal Government funded 90% of the National System of Interstate Defense Highways.
Military Defense
federal government.
The largest portion of the federal government's budget is spent on national defense. The defense of the nation is very important because it is what spurs national growth.
National level of Government
I am assuming by level, you mean level of government. There is no distinction between government on a national level and government on a federal level. The federal level of government is the highest tier of government because its central to the nation. It represents a union of states. Those union of states form a nation. So you see how the two terms are interchangable, and can be used synonymously. The federal government is government on a NATIONAL level.
the national government
National Government