All 193 members of the U.N. General Assembly will vote on the new members of the Security Council on Thursday. Spain, Turkey and New Zealand have been campaigning for the two remaining seats on the Council.

The United Nations Security Council is the smallest decision-making unit of the United Nations with just 15 members, but it wields the most power.

Of the 15 seat holders, the five permanent members are the United States, the United Kingdom, France, Russia, and China.

The other 10 are non-permanent members, with five nations elected every year by region for a two-year term. With Angola set for Africa, Malaysia uncontested for Asia, and Venezuela unopposed for Latin America, the focus is on New Zealand, Spain and Turkey who are vying for the Western nations seats.

Aside from winning a chance to shape geopolitics, the new members will redefine the dynamics of the Security Council and how it deals with global threats.

CCTV America’s Liling Tan reports.

Follow Liling Tan on Twitter @LilingTan