  The war on Ukraine has affected significantly scientific cooperation and
communication in particle physics and also in many other fields of scientific,
cultural and educational exchange. Immediately after the war in February 2022,
many scientific institutions paused or banned scientific cooperation and
exchange with Russian and Belorusian institutes and their scientists.
Publications were out on hold or even banned, if Russian scientists were on the
author list. The Science4Peace (S4P) Forum was created in March 2022 as a
consequence of these restrictions, as a completely independent Forum for open
communication among scientists, using independent ZOOM rooms and webpages. The
basic ideas of the S4P Forum are fully in line with the policy of IUPAP of
supporting and encouraging free scientific exchange. In the course of
discussions on the consequences of the war on Ukraine, the S4P Forum organized
a high-level panel discussion on "Sanctions in Science - One Year of
Sanctions". The war on Ukraine has also increased enormously the risk of
nuclear escalation. Together with 14 Nobel laureates and many Scientists, the
S4P Forum launched an appeal to subscribe to the "no-first use" policy and
urged the governments to subscribe to the Treaty of the Prohibition of Nuclear
Weapons adopted by the United Nations. The S4P Forum fully supports the ideas
and activities originating from the International Year of Basic Sciences for
Sustainable Development (IYBSSD) to open and to keep open discussion channels
at all levels, using Science as a common language.
