Q 1.

With reference to economic sanctions, naval blockades and international law, consider the following statements:

1. Economic sanctions may be imposed unilaterally by individual States or collectively through the United Nations Security Council.
2. A naval blockade imposed during an armed conflict is governed by international humanitarian law and must comply with conditions concerning its conduct and humanitarian consequences.
3. Under the United Nations Charter, the use of armed force against another State is permissible whenever economic sanctions fail to achieve their intended objectives.
4. The United Nations Security Council may impose non-military measures under Article 41 of the UN Charter to maintain or restore international peace and security.

Which of the statements given above is/are correct?