premise: David Packouz was formerly an heir to the Russian throne.
hypothesis: The Crown Prince of Thailand ( or Siam ; สยามมกุฎราชกุมาร ) is a title held by the heir apparent to the Thai throne . David Mordechai Packouz ( [ pækhaʊs ] born February 16 , 1982 ) is an American former arms dealer , musician , inventor and entrepreneur .