What topic does Janeczko introduce in this passage?
Read the excerpt from The Dark Game by Paul
Janeczko
British efforts to challenge German spies
the growth of U.S. intelligence agencies
ways to crack complex codes
German supremacy among international spies
While U.S. intelligence agencies were not prepared to
keep track of and stop German operatives who had
slipped into this country, their counterparts in England
did have the personnel and system to take on the
German espionage machine. True, the British had more
at stake in the war, but they also were much better
prepared to fight Germany in espionage battles, with
some of their best work done in the area of codes and
ciphers.