Early efforts to resist the Nazis with aid from abroad were hindered when the opposition's peace feelers to the Western Allies did not meet with success. This was partly because of the Venlo incident of 9 November 1939,[59] in which SD and Gestapo agents, posing as anti-Nazis in the Netherlands, kidnapped two British Secret Intelligence Service (SIS) officers after having lured them to a meeting to discuss peace terms.