Foreign Minister Sergei Lavrov and his Iranian counterpart Mohammad Javad Zarif agreed to make the call on Monday while denouncing the US attack on the Syrian airbase as “an act of aggression against a sovereign nation”.
Since Mr Trump ordered the launch of 59 Tomahawk missiles at the airfield in Syria’s Homs province, the US and UK on one side, and Russia and Iran on the other, have made reciprocal threats of further military action.
A spokesman from the Russian Foreign Ministry told the country’s state news agency Tass that the country’s chief diplomat spoke with his Iranian opposite number on the phone on Monday.
He said: “Lavrov and Zarif called for carrying out a thorough and unbiased investigation into the incident in the Syrian province of Idlib that has led to numerous deaths among the civilian population.
“(They) discussed the situation in Syria after the US launched a missile strike on the airbase in that country.”
He added: “Both sides emphasised that such aggressive actions against a sovereign independent country are a flagrant violation of international law, above all, the UN Charter, create threats for regional security and impair the fight against international terrorism.”
The two ministers agreed to maintain close contacts “with a view to further coordinating cooperation on the pressing bilateral and international issues.”
There was outrage across the world after dozens of civilians were killed in what is believed by the West to have been a chemical weapons attack on the Syrian village of Khan Sheikhoun by the regime of Bashar Assad.
Russia has argued that the event took place after the Syrian air force undertook an attack on the outskirts of the village in a bid to destroy militant facilities used to produce chemical bombs, though the claim has been dismissed by the US as “simply not credible”.
The incident, and in particular pictures of children killed or injured by toxic gas, led President Trump to launch a missile attack on the airfield from which the chemical weapons are believed to have originated.
In the wake of the strike, both US and UK diplomats and politicians warned that Mr Trump is willing to take action again if the circumstances merit it.
Meanwhile, Russia and Iran have also warned the US that they will 'respond with force' if red lines are crossed in Syria again.
With US Secretary of State Rex Tillerson heading to Moscow later this week, he and Foreign Secretary Boris Johnson went to Italy on Monday to gather support from G7 nations for a tougher statement of intent on Syria, with new sanctions on Russia a possibility.
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