Political Geography

Mexico

Federal Republic

President Enrique Peña Nieto

United States of America

Constitution-Federal Based Republic

Barack Obama

China

Communist Based

President Hu Jintao

Afghanistan 

Islamic Republic

President Hamid Karzai

Israel

Liberal Democracy, Parliamentary system

President Shimon Peres

Iran

Theocratic Republic

Mahmoud Ahmadi-Nejad

India

Federal Republic

President Pranab Mukherjee

Germany

Federal Republic

Chancellor Angela Merkel

France

Semi-Presidential System, Unitary State, Constitutional Republic

President François Hollande

Brazil 

Federal Republic

President Dilma Rouseff

Saudi Arabia

Monarchy

Prime Minister Abdullah

Venezuela

Federal Republic

President Hugo Chavez

United Kindom

Constitutional Monarchy & Common Wealth Realm

Prime Minister David Cameron