Donald Trump has said he will be "indirectly" involved in the talks between Iran and the United States which are due to begin in Geneva later on Tuesday, BBC reported. 

Speaking to reporters aboard Air Force One, the US president added that he believed Iran wanted to make a deal over its nuclear programme. 

The second round of talks in Switzerland follows repeated military threats against Iran over the country's deadly crackdown on anti-government protests and the ongoing dispute over its nuclear programme, according to BBC.