Complex sentence: After drugging Romanova at dinner, Grant overcomes Bond, then taunts him by revealing SPECTRE's involvement in the theft and what they plan to do, and also revealing that Romanova was unaware of what was going on, believing she was doing it for Russia.
Split into simpler sentences: After drugging Romanova at dinner, Grant overcomes Bond, then taunts him by revealing SPECTRE's involvement in the theft and what they plan to do. He also discloses that Romanova was unaware of what was going on, believing she was working for Russia.