What are the motifs in By Way of Deception by Victor Ostrovsky?

Secrecy is a motif through the book, and it is not a surprising theme. Every intelligence agency has a need for secrecy. Lives depend on it. The Mossad doesn't want their agents identified because it can blow an operation. This is the point made to Victor during one of his training exercise when he used the same hotel twice. It is possible that someone could have recognized him and that would have ended the operation. The Mossad was always interested in protecting their sources. Because of this, they didn't tell the Americans about the Mercedes truck that was outfitted with bombs for a suicide mission.