Kenya's President Mwai Kibaki has opened an international conference in Nairobi aimed at strengthening efforts to eradicate millions of land mines around the world.
Mr. Kibaki Sunday asked hundreds of delegates not to rest until every land mine is destroyed.
Organizers say the conference was called to study what has been done since a ban on the use of anti-personnel mines in dozens of nations took effect five years ago.
Some 4 million mines have been cleared under the pact, which has been ratified by 143 nations.
More than 40 nations have not signed the treaty, including the United States, Russia and China.
The U.S. State Department has said it disagrees with key parts of the ban, but says it has signed other treaties restricting the use of anti-personnel and anti-vehicle mines.