Poland’s secret service has arrested a man who apparently wanted to help Russian military intelligence plan an assassination attempt on Ukrainian President Volodymyr Zelensky. The Polish citizen was arrested on Polish territory on Wednesday, the public prosecutor’s office in Warsaw announced on Thursday. Investigators accuse him of declaring his “willingness to act on behalf of foreign intelligence services against Poland.” If convicted, he faces up to eight years in prison. According to the public prosecutor’s office, the man allegedly collected information about the security measures at Rzes…