As of May 9, 84 nations have signed the Kyoto Protocol designed to regulate global climate change by reducing greenhouse gas emissions. 

But only 34 of them have ratified the treaty.  Of those, one European nation, Romania, has ratified the treaty. 

The United States has not ratified the treaty and the United States Senate earlier voted against support for the treaty by a vote of 95-0.

Below is a list of the nations that have ratified the treaty, and those that have not.

Nations That Have Ratified Kyoto:

ANTIGUA AND BARBUDA
AZERBAIJAN
BAHAMAS
BARBADOS
BOLIVIA 
CYPRUS
ECUADOR
EL SALVADOR 
EQUATORIAL GUINEA
FIJI
GEORGIA
GUATEMALA
GUINEA
HONDURAS
JAMAICA
KIRIBATI 
LESOTHO  
MALDIVES
MAURITIUS
MEXICO
MICRONESIA
MONGOLIA 
NICARAGUA 
NIUE
PALAU
PANAMA 
PARAGUAY
ROMANIA
SAMOA
TRINIDAD AND TOBAGO
TURKMENISTAN
TUVALU
URUGUAY  
UZBEKISTAN

Nations Yet to Ratify Kyoto

ARGENTINA
AUSTRALIA
AUSTRIA
BELGIUM
BRAZIL
BULGARIA
CANADA
CHILE
CHINA
COOK ISLANDS
COSTA RICA
CROATIA
CUBA
CZECH REPUBLIC
DENMARK
EGYPT
ESTONIA
EUROPEAN COMMUNITY
FINLAND
FRANCE
GERMANY
GREECE
INDONESIA
ITALY
IRELAND
ISRAEL
JAPAN
KAZAKHSTAN
LATVIA
LIECHTENSTEIN
LITHUANIA
LUXEMBOURG
MALAYSIA
MALI
MALTA
MARSHALL ISLANDS
MONACO
NETHERLANDS
NEW ZEALAND
NIGER
NORWAY
PAPUA NEW GUINEA
PERU
PHILIPPINES
POLAND
PORTUGAL
REPUBLIC OF KOREA
RUSSIA FEDERATION
SAINT LUCIA
SAINT VINCENT AND THE GRENADINES
SEYCHELLES
SOLOMON ISLANDS
SPAIN
SLOVAKIA
SLOVENIA
SWEDEN
SWITZERLAND 
THAILAND
UKRAINE
UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
UNITED STATES OF AMERICA
VIET NAM
ZAMBIA

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