“Thanks to everyone who was involved in ensuring that the summit was held in the best possible conditions, and to all those who are involved in finding solutions to world problems,” the politician wrote on Twitter.
The meeting between Putin and Biden takes place at the Villa La Grange in Geneva.
After taking pictures with Guy Parmelin, the heads of state shook hands and retired to negotiations.
They are expected to last four to five hours.
The Kremlin said that the summit will consist of three parts.