Mexico

Federal Republic

Enrique Peña Nieto

http://en.wikipedia.org/wiki/Enrique_Pe%C3%B1a_Nieto

China

Communist State

 Hu Jintao

http://en.wikipedia.org/wiki/Hu_Jintao

India

Federal Republic

Pranab Mukherjee

http://en.wikipedia.org/wiki/Pranab_Mukherjee

Afghanistan

Islamic Republic

Himid Karzai

Iran

Islamic republic, Unitary state, Theocracy           

Mahmoud Ahmadinejad

http://www.freedomessenger.com/archives/49625

Israel

Liberal democracy, Parliamentary system

Shimon Peres-President, Benjamin Netanyahu- 

http://www.gavison.com/a155411-analysis-what-is-the-definition-of-moral-turpitude

Germany

Democracy, Parliamentary republic, Federal republic

Angela Merkel –Chancellor

United Kingdom

Hereditary monarchy, Constitutional monarchy, Parliamentary system, Unitary state

David Cameron

France

Semi-presidential system, unitary state, Constitutional republic

François Hollande

http://www.milkintheclock.com/2010/02/historic-moment-french-president-visits-haiti/

Brazil

 Presidential system, Constitutional republic, Federal republic

Dilma Rousseff

http://pt.wikipedia.org/wiki/Dilma_Rousseff

Venezuela

Federal republic, Presidential system, Constitutional republic, Republic

 Shalues

Saudi Arabia

King Abdullah Bin Abdulla Aziz