Delivering justice for flight MH17's 298 victims, killed when a Russian missile shot down the Malaysian Airlines jet, will be nigh on impossible because of the reliance of western Europe on Russian gas and limited impact further diplomatic and economic sanctions can have on Vladimir Putin's regime, strategic policy experts believe. Australian foreign minister Julie Bishop confirmed the Turnbull govt was speaking to other nations about Russia's actions after it was revealed the Turnbull govt could enlist the help of European and American allies for a mass diplomatic retaliation over Moscow's refusal to accept responsibility for the tragedy. Bishop said there was "overwhelming evidence" that Russia was directly involved in bringing down the flight, rubbishing the Russian ambassador to Australia Grigory Logvinov's claim that the international investigation was based on part of an anti-Kremlin conspiracy. <br/>