A group of four countries led by Canada has requested that Iran submit to arbitration to settle a dispute over its shooting down of a Ukrainian jet.
Ukraine International Airlines flight PS752 was hit by two missiles after taking off from Tehran on 8 January 2020. All 176 people on board died.
Three days later, Iran admitted mistakenly shooting down the plane.
The group, made up of Canada, Sweden, Ukraine and the UK, said it was taking "concrete action" against Iran.
The four nations have been seeking reparations on behalf of the families of the victims - many of whom were citizens or residents of those countries.
Iran, for its part, said its air defences had been on high alert at the time of the incident after it fired ballistic missiles at two Iraqi military bases hosting US forces amid heightened tensions with the US.
In a joint statement released on Wednesday, the four countries "requested that Iran submits to binding arbitration of the dispute related to the downing of Flight PS752" under a 1971 multilateral treaty on threats to civil aviation.
It said the group remained "committed to pursuing efforts to hold Iran accountable for its multiple breaches of its international legal obligations".
BBC
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