Complex sentence: In his escapes from his Canadian prisons, Mesrine had required little more than wire cutters and a very high degree of audacity, now he faced security far better than any he had defeated before.
Split into simpler sentences: In his escapes from his Canadian prisons, Mesrine had required little more than wire cutters and a very high degree of audacity. During this incarceration, however, he faced security far better than any he had defeated before.