Related Rule
Russian Federation
Practice Relating to Rule 68. Precautions while Receiving Parlementaires
The Russian Federation’s Regulations on the Application of IHL (2001) states:
When receiving the parlementaire and persons who accompany him, the commander shall take all the necessary steps to keep secret the activities related to the preparation and conduct of combat operations. 
Russian Federation, Regulations on the Application of International Humanitarian Law by the Armed Forces of the Russian Federation, Ministry of Defence of the Russian Federation, Moscow, 8 August 2001, § 68.
The Russian Federation’s Regulations on the Application of IHL (2001) states:
The parlementaire and persons who accompany him may be temporarily detained if they misuse their status (collecting intelligence, humiliating the honour and dignity of the receiving party and similar cases). 
Russian Federation, Regulations on the Application of International Humanitarian Law by the Armed Forces of the Russian Federation, Ministry of Defence of the Russian Federation, Moscow, 8 August 2001, § 68.