The visit of Ukrainian President Viktor Yanukovych to Russia and his meeting with Russian President Vladimir Putin is still being discussed and the date of the visit has yet to be agreed on, Russian presidential aide Yury Ushakov said.

"The visit is being discussed, and for the time being, I cannot say the exact date has been defined," Ushakov told journalists after Putin's address to the Federal Assembly on Wednesday.

Asked whether energy will be discussed and any documents signed during the visit, Ushakov said: "When the leaders of the two countries meet, this will be one of the issues on the agenda. I do not know whether this will happen this time."