MOSCOW, December 23. /TASS/. Leaders of the Eurasian Economic Union (EAEU) member-countries will discuss key issues of interaction, including common gas and oil markets forming, at their summit on December 26, Russian presidential aide Yury Ushakov told reporters.

"A meeting with a small number of participants will be held at first, where the leaders will privately discuss certain important practical issues, particularly the establishment of the common gas market of the Eurasian Economic Union and the progress in forming common oil and petroleum products’ markets," Ushakov said.

More than twenty documents are planned to be signed in conclusion of the summit, he added.