Liev Schreiber was out and about with his young sons, Sasha and Kai, yesterday in NYC. The father of two turns 45 today, and while he's spending his birthday week close to home, he and Naomi Watts did some traveling recently in support of his latest film. Liev and Naomi were at the Venice Film Festival premiere of The Reluctant Fundamentalist in late August. Liev stars in the upcoming drama alongside Kate Hudson, who kept up her end of the press tour for the project by taking the film to the Toronto International Film Festival last month as well. Despite busy work schedules for the Schreiber-Watts — Naomi spent much of her Summer in character as Princess Diana shooting a biopic of the royal — she and Liev also made time for a family vacation with the boys in Saint-Tropez in August.