SAN FRANCISCO – October 15, 2018 – Today Ubisoft® announced that the US Nationals Finals for Tom Clancy’s Rainbow Six® Siege will take place in Las Vegas on December 15-16at the Penn & Teller Theater located within the Rio Hotel. In partnership with Caesar’s, the US Nationals Finals will feature eight of the top Eastern and Western Conference SAN FRANCISCO – October 15, 2018 – Today Ubisoft® announced that the US Nationals Finals for Tom Clancy’s Rainbow Six® Siege will take place in Las Vegas on December 15-16at the Penn & Teller Theater located within the Rio Hotel. In partnership with Caesar’s, the US Nationals Finals will feature eight of the top Eastern and Western Conference