in international law the policy of nonparticipation in war and, during peacetime, nonalignment with military blocs. A neutral state has a right to inviolability of its territory, of citizens not involved in the military action of the combatants, and of property not classed as military contraband. A neutral state may defend its neutrality by force of arms (armed neutrality).
Neutrality during wartime applies to states not involved in the war after it begins. A country may make a special declaration of neutrality (but this is not compulsory). The rights and obligations of a neutral state during wartime are set forth in the Hague Conventions V and XIII of 1907 on the rights and obligations of neutral powers in case of land war and in case of maritime war. These documents prohibit any military action that could be considered as assistance to the combatants. According to the Geneva Conventions of 1949 a neutral country may act as a sponsor to help implement the conventions—that is, with the consent of the combatant parties it may send medical units to assist persons taken under the protection of the combatant states in accordance with the Geneva Conventions.
A permanently neutral state is obligated to refrain from warfare (except in cases of self-defense) and, during peacetime, to conduct a peaceful foreign policy, not participate in military alliances and coalitions, and not conclude agreements that might involve it in war. Unlike states that have declared themselves neutral during a war, permanently neutral states are obligated to carry out an appropriate policy at all times, in war as well as in peace. Permanently neutral countries are Switzerland (since 1815) and Austria (since 1955). Permanent neutrality is called contractual if the states follow the appropriate policy on the basis of an international agreement. In the 1950’s to 1970’s the policy of positive (or constructive) neutrality followed by many independent developing states in Asia, Africa, and Latin America, which reflects the peaceful trend of their foreign policy, has been very important. Such neutrality is often called neutralism, the policy of nonalignment with blocs, or active neutrality.