Serzh Sargsyan and Ilham Aliyev will meet on 10 August in Sochi with participation of Russian President Vladimir Putin, Novruz Mammadov, Deputy Head of the Presidential Administration says in a tweet.
According to Mammadov, Azerbaijan and Russian presidents will meet on 9 August.
"We're already in Sochi. Today the Presidents of Azerbaijan & Russia'll have a bilateral meeting for increasing cooperation btwn 2 countries," Mammadov writes.
"But the meeting of the Presidents of #Azerbaijan and #Armenia with the participation of #Russian President will be tomorrow," the tweet reads.
In another tweet, Mammadov writes that the Armenian and Azerbaijani presidents will discuss the Karabakh conflict and the breakthrough in the negotiations will depend on "how much constructive will be Armenian president's stand."
Meanwhile, according to the Kremlin website, Vladimir Putin will meet with President of Armenia Serzh Sargsyan in Sochi on August 9. According to the source, the meeting with Mr Sargsyan will include an exchange of views on further developing Russian-Armenian political, trade and economic, and humanitarian cooperation. Armenia's accession to the Agreement on the Eurasian Economic Union will be a key issue on the agenda. The last Sargsyan-Aliyev meeting was on 29 November 2013 in Vienna.
In a lengthy series of tweets ahead of the Shochi meeting with Russian and Armenian leaders, Azeri President writes that war is not over. According to Aliyev, the first phase of war is over, but there may be a second one.