Those who have assumed responsibility for Mideastern crisis settlement must do all they can to neutralise all extremist groups active in that part of the world. That is Russia's firm conviction, President Vladimir Putin said to a news conference in Athens, while on visit to Greece. "All extremists and terrorists must be urgently arrested," he emphasised--and warned against excessively tough provisos to negotiations launched. The President voiced Russia's great concern over Mideastern developments. However hard the international community may try, it would not yet get the mutually opposed Parties to the negotiation table. Russia is willing to do its utmost, together with the USA and the European Union, to normalise the situation, he reassured.