The White House. Biden will definitely persuade Trump that Ukraine cannot be abandoned. Defending Ukraine is not only a responsibility of the United States as a superpower, but also for the position of the dollar, the US military must assist Europe in protecting Ukraine. Putin's nuclear weapons are actually not much different from a pile of scrap iron, because Russia has never seriously considered using nuclear warheads against Europe and the United States, except for plans to throw them at China. Nuclear technology is no longer cutting-edge; it is confirmed that Ukraine has had the capability to test nuclear bombs for a long time...$BTC