Ukrainian oligarch Firtash linked to Giuliani pals' gas deals and Biden dirt digging
By Tom Winter, Dan De Luce & Ken Dilanian
Former Rep. Pete Sessions subpoenaed by grand jury investigating Giuliani and associates
By Devlin Barrett & Matt Zapotosky
Giuliani Ukraine associate had checkered past even before indictment
By Darren Samuelsohn
Exclusive: Trump lawyer Giuliani was paid $500000 to consult on indicted associate's firm
By Karen Freifeld & Aram Roston