In a random turn of events, President Donald Trump revealed that he now believes Russia meddled in the 2016 presidential election, adding that other countries probably interfered too and Barack Obama did nothing about it because he assumed Hillary Clinton would win.

“Well, I think it was Russia and I think it could have been other people and other countries. It could have been a lot of people that interfered,” Trump said at a joint press conference with Polish President Andrzej Duda in Warsaw on Thursday. He also said Obama knew of the inteference in August, but did nothing: “I think what happened was that [Obama] thought that Hillary Clinton was going to win the election, and he said let’s not do anything about it.”

“Nobody really knows. Nobody really knows for sure,” he responded when asked if he thought Russia’s interference had an impact on the results. “Our strong alliance with Poland and NATO remains critical to deterring conflict and ensuring that war between great powers never again ravages Europe and that the world will be a safer and better place. America is committed to maintaining peace and security in Central and Eastern Europe. We’re working with Poland in response to Russia’s actions and destabilizing behavior.”

Donald Trump is also going to sit down with Russian President Vladimir Putin himself on Friday in Germany.