2014 - WAEC Government Past Questions and Answers - page 5

Foreign policy is a government's strategy in dealing with other nations.

Small geographical size
A condition that is important in the choice of a unitary system of government is the size of the country. For a country with a small geographical size, the choice of a unitary system over a federal system is more appropriate.

The permanent members of the United Nations Security Council (also known as the Permanent Five, Big Five, or P5) are the five states which the UN Charter of 1945 grants a permanent seat on the UN Security Council: China (formerly the Republic of China), France, Russia (formerly the Soviet Union), the United Kingdom, united states of America

The United Nations officially came into existence on 24 October 1945, when the Charter had been ratified by China, France, the Soviet Union, the United Kingdom, the United States and by a majority of other signatories. 

Commonwealth; is an international association consisting of the UK together with states that were previously part of the British Empire, and dependencies.

The Head of the Commonwealth is the Queen of England,and  is recognised by the members of the Commonwealth of Nations as the "symbol of their free association" and serves as a leader, alongside the Commonwealth Secretary-General and Commonwealth Chair-in-Office.

Rwanda and Mozambique became commonwealth members in 2009 and 1995 respectively, and neither has a British colonial past or constitutional link.

The Commonwealth Heads of Government Meeting  is a biennial summit meeting of the heads of government from all Commonwealth nations.
Biennial means it occurs every two years

The Security Council is primarily responsible for the maintenance of international peace and security