“If you miss events like the G20, you risk handing over propaganda opportunities to others,” Bloomberg quoted him as saying.
Johnson added that he would be "extremely amazed" by Putin's visit to the summit in Indonesia.
Earlier, an aide to the Russian leader, Yuri Ushakov, said that Moscow had received an invitation to the G20 summit, which will be held in Indonesia.
He added that the Russian side would proceed from this in the matter of the face-to-face presence of President Vladimir Putin at the event.