"Iran, Russia and Qatar have massive natural gas reservoirs," Iranian Oil Minister Javad Owji told Reuters on Tuesday, responding to a question about how he viewed markets in the wake of escalating tensions between Russia and Ukraine.

"Iran and Qatar and Russia have massive natural gas reservoirs. I don't know what the future holds," Owji said when speaking on the sidelines of a gas exporters conference in the Qatari capital of Doha before being cut off by conference security.