The White House said Mr Trump and Mr Putin had attended a dinner with G20 leaders at the recent Hamburg summit. After the meal, Mr Trump had walked over to the Russian leader for a conversation not previously disclosed. But Ian Bremmer, president of political risk consultancy Eurasia Group, said Mr Trump had left his seat during the meal and spent about an hour talking "privately and animatedly" with Mr Putin. Mr Bremmer was the first to report what he described as a meeting in a note to clients. The White House has disputed it, saying: "There was no 'second meeting' between President Trump and President Putin, just a brief conversation at the end of a dinner."
Mr Trump wrote on Twitter: "Fake News story of secret dinner with Putin is sick. All G20 leaders, and spouses, were invited by the Chancellor of Germany. Press knew!"Mr Bremmer replied to him: "Press didn't know you spent an hour during dinner in 1-1 discussion with Putin (and his translator). Other G20 leaders found it...unusual.
Mr Putin's translator was the only other person present during the conversation between the pair but there was no translator for Mr Trump, something Mr Bremmer described as a "breach of national security protocol". An unnamed White House official said that both men used the Russian translator as Mr Trump's translator did not speak Russian. The G20 leaders had only been allowed to have one translator attend the dinner with them, the official said, adding that, because Mr Trump had been sitting next to the wife of Japan's Prime Minister Shinzo Abe at dinner, his translator was for Japanese. The US and Russian Presidents met for the first time on 7 July and, during their two-hour meeting, Mr Putin reportedly denied allegations that he had been behind efforts to meddle in last year's presidential election. The news comes amid a number of investigations into the possible Russian interference and also whether the Trump campaign team were linked to the activity. Mr Trump has denied this.