The Republican presidential front-runner does not believe the international committee investigating the MH17 crash has enough evidence to hold Russia responsible for the tragedy.

"I think it is horrible. But they're saying it wasn't them. The other side says it is them. It may have been their weapon, but we really probably won't know for sure. There are only a few people that know. And you know one of them could be Putin, and we know one thing: He's not going to be talking about it," he said.

In his interviews, Donald Trump is very careful not to criticize Russia because he promised his voters to normalize relations with it and not to get the US involved in a new Cold War. Political experts believe Trump is only running in the presidential race to steal votes from other candidates who stand good chances of getting elected.