Before the 5th Congress met, high-ranking Bolsheviks held a meeting in Berlin in April 1907 to discuss staging a robbery to obtain funds to purchase arms.
第五届代表大会前夕，布尔什维克高层曾于1907年4月在柏林举行会谈，讨论上演一场去得购买武器资金的抢劫案。