OPEC and non-OPEC countries press conference in Vienna OPEC and non-OPEC countries hold a press conference in Vienna after a two day meeting in which Russia joined an OPEC-led pledge to boost oil production in response to growing global demand. The non-cartel countries in the so-called OPEC+ alliance were widely expected to give their backing after ministers from the Organization of Petroleum Exporting Countries already agreed on Friday to boost output from July. IMAGES AND SOUNDBITES