Yukio Nakazaki, executive committee chairman of the Nagasaki event, told the conference, ''As a military power, the United States is trying to push the current of nuclear disarmament to nuclear arms expansion. The focus is how peace movements around the world can prevent such a move.''

The issue of nuclear power stations at home and abroad is another major one for Gensuikin and it will hold an international meeting on the issue on Thursday, according to organizers.

Gensuikin is backed by the Democratic Party of Japan, the Social Democratic Party and the Japanese Trade Union Confederation (Rengo), Japan's largest labor group.

Meanwhile, the Japan Council Against Atomic and Hydrogen Bombs (Gensuikyo), a rival antinuclear group aligned with the Japanese Communist Party, is scheduled to start a two-day meeting in Nagasaki on Thursday.