"World Leaders" became Volume 6 of Worldmark Encyclopedia of the Nations (WEN) with the Tenth Edition, published in 2001. For this new edition of "World Leaders," entries for all 193 countries were updated. In 29 nations, a leadership change since the last edition necessitated the preparation of a new profile. The entries in "World Leaders" provide biographical profiles of the person who is the head of the nation's government and who bears primary responsibility for the country's policy...