Defenses Military policy 25 Armed Forces 13 Nuclear weapons 8 National security 6 Arms control 5 Politics and government 5 more ... Foreign relations 4 Congresses 3 History 3 World politics 3 Arms race 2 Disarmament 2 Economic conditions 2 Military relations 2 Moral and ethical aspects 2 Nuclear arms control 2 Nuclear disarmament 2 Nuclear warfare 2 Strategic Defense Initiative 2 Strategic aspects 2 Warfare, Conventional 2 Antinuclear movement 1 Appropriations and expenditures 1 Armored troops 1 Arms transfers 1 Artillery 1 Ballistic missiles 1 Civil-military relations 1 Collected works 1 less ...