Donald Trump casts doubt on Navalny poisoning, saying US 'hasn't had any proof'

US president says media should be asking about China rather than Russia despite global condemnation of attack

President Donald Trump said the United States must look very seriously" into the poisoning of Russian opposition leader Alexei Navalny, but that his administration had not yet seen any proof.

I think we have to look at it very seriously, if it's the case," he said, before talking at length about his diplomatic efforts in North Korea and nuclear non-proliferation in Russia. I don't know exactly what happened. It's tragic. It's terrible, it shouldn't happen. We haven't had any proof yet, but I will take a look.