The rest of the world must threaten the US with the Fourth World War (but only as the U.S. itself habitually does instead of first offering negotiated settlement (e.g. Vietnam, Iraq, Panama etc). The demand is that the UN must be reconvened to represent equally all States and peoples and that the US submit all long-range (i.e. attack) weapons to the new UN.
Grandad, savouring the well-known phrase of Lyndon Johnson, will reply “Fuck You” and then “if I’m finished we all go together”. And unfortunately, Grandad, who has Hitler’s body in the basement, also has a fool-proof line to the Big Red Button. Our job is to lead him away from it and welcome him to a bright and happy new world that his understanding has finally allowed all of us, including him, to re-inherit. A place where finally his very own Grandchildren can truly love him for what he did. Farewell Wall Street.