There is a cluster of existential risks confronting everyone now alive on the planet. Each of them involves a cataclysmic scenario for which we are not prepared. The reality is that no country in the world has the capacity to protect us from a planetary scale disaster. Multilateralism has failed. The retreat to unilateralism is ratcheting up the risks. Realistically the only hope for us all and future generations is a U.N. Parliamentary Assembly and global governance that set planetary integration into motion. The alternative is annihilation.