Complex sentence: When ordered to have all Jews in France rounded up to be transported to German-occupied Poland, Laval negotiated a compromise, allowing only those Jews who were not French citizens to be forfeited to the control of Germany.
Split into simpler sentences: When ordered to have all Jews in France rounded up to be transported to German-occupied Poland, Laval negotiated a compromise. He allowed only those Jews who were not French citizens to be forfeited to the control of Germany.