A group of international progressives on Friday released a declaration demanding an urgent withdrawal of Russian forces from Ukraine, a global end to “rampant militarism,” and the forging of a collaborative movement to ensure lasting peace and a planet safe from climate catastrophe.

The Athens Declaration was unveiled at a press conference in the Greek capital by Turkish author Ece Temelkuran; British Member of Parliament and former Labour leader Jeremy Corbyn; and former Greek finance minister and leader of the MeRA25 party Yanis Varoufakis. The three are all Progressive International council members.

“Our purpose here,” said Corbyn, “is to bring about.. a voice for peace.”