Japan and the United States pledged Friday to strive for a world without nuclear weapons and vowed to call on states to curb the role atomic arms play in their security strategies.

The agreements were included in a joint statement issued after the Tokyo summit between Prime Minister Yukio Hatoyama and U.S. President Barack Obama.

Japan, as the only state to have experienced atomic bombings, is committed to nuclear disarmament, while Obama, the Nobel Peace Prize laureate, is seeking to create a world free of nuclear arms.