Russian foreign minister, Sergey Lavrov, on Saturday lashed out at those trying to impede settlement of the Syrian crisis, saying the era of solving world issues unilaterally is over.

Speaking at a press conference with his Iranian and Turkish counterparts following their tripartite meeting on Syria peace process, Lavrov said it was weird that the United Nations was pressured to criticize the Astana process and Sochi national Syrian dialogue congress while they can help in the settlement of the crisis.

He said reconciliation among the Syrian people should be encouraged, and the United Nations can certainly play a role in this, but "some are creating challenges, and want to create the impression that they alone can solve all the problems facing the world".

Asked whether the three countries, Russia, Iran and Turkey as guarantors of ceasefire regime in Syria, have any plans for cooperation with the United Nations, Lavrov said the UN can "do a lot of things towards settling the crisis in Syria".

As a first step, Lavrov said, the UN can help in de-escalating tensions in Syria because it is in contact with all warring parties. However, he said, the incessant fight against terrorist groups will continue because peace loving people should be separated from terrorists.

He also recommended that the United Nations should increase its humanitarian aid to Syria, just like Russia, Iran and Turkey, which have done a lot in this regard.

Lavrov reiterated that the United Nations should also cooperate with the government in Damascus, and to this end Moscow, Tehran and Ankara will encourage the Syrian government to show more flexibility. However, the Russian foreign minister said the United Nations has no right to politicize such humanitarian cooperation, or say for example that it would only help the Syrian opposition groups.