Hunter Biden: From the end of the war in Ukraine to cheap gasoline; What happened to Trump's promises? Hunter Biden, the son of the former US president, visited Donald Trump again and recalled his list of election promises. He said: Trump was supposed to end the war in Ukraine in one day. He promised not to enter into any new foreign conflicts, let alone war, he was supposed to lower the prices of gasoline, food and rent just go off the list; Dozens and dozens of promises were given.