The 1915 International Congress of Women was organized by the German feminist Anita Augspurg, Germany's first female jurist, and Lida Gustava Heymann (1868–1943) at the invitation of the Dutch pacifist, feminist and suffragist Aletta Jacobs to protest the war then raging in Europe, and to suggest ways to prevent war in the future. The Congress opened on April 28, wound up on May 1, and was attended by 1,136 participants from both neutral and belligerent nations, adopted much of the platform of WPP and established an International Committee of Women for Permanent Peace (ICWPP) with Jane Addams as president. WPP soon became the US Section of ICWPP.