U.S. President Donald Trump on Thursday launched his Board of Peace, initially designed to cement Gaza's fragile ceasefire, but which he envisions taking a wider role that has raised concerns among other global powers. He said the board would work alongside the United Nations.

Trump, who will chair the board, invited dozens of other world leaders to join, saying he wants it to address challenges beyond the stuttering Gaza ceasefire. Critics have expressed misgivings that it could undermine the UN's role as the main platform for global diplomacy and conflict resolution.

Trump said permanent members must help fund the board with a payment of $1 billion each.