Related Rule
Russian Federation
Practice relating to Rule 66. Non-Hostile Contacts between the Parties to the Conflict
Section B. Use of the white flag of truce
The Russian Federation’s Regulations on the Application of IHL (2001) states: “The white flag signifies the intention of those who have flown it to enter into negotiations with the opposite party and does not necessarily mean surrender.” 
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, § 67.