The humanitarian organisation said it was unable to obtain foreign financial assistance for the victims of the disaster as a result of the “inhuman” measures reintroduced by Donald Trump last year.
Instead the Red Crescent are reliant on non-financial help, such as a recent rescue package of boats and equipment worth €300,000 (£260,000) from Germany.
“No foreign cash help has been given to the Iranian Red Crescent society,” the group said in a statement. “With attention to the inhuman American sanctions, there is no way to send this cash assistance.”
It came after Iranian foreign minister Mohammad Javad Zarif accused the US of “economic terrorism” and claimed that secretary of state Mike Pompeo was “trying to take abnormal and politically-driven advantage of the suffering of human beings afflicted by natural disasters.”
Mr Pompeo had earlier accused Iran’s clerical establishment of “mismanagement in urban planning and in emergency preparedness”, while indicating the US was willing to assist the relief effort.
The floods, which mainly affected the northeast and southwest of the country, were caused by exceptionally heavy rainfall which has hit the country since 19 March.
Iran’s government has promised to compensate all losses but the budget is already stretched due to a sharp reduction in oil exports as a result of sanctions.
The US is also said to be planning to ramp up the pressure on Iran even further by designating the Revolutionary Guard a “foreign terrorist organisation”.
Around 60 groups, such as al-Qaeda, Isis and Hezbollah, have been designated by the defence department as “foreign terrorist organisations”, but this would be the first to apply to a state-run military.
However officials have raised concerns that the move could complicate US diplomatic efforts and may even prompt Iran to retaliate against US forces in the region.
Additional reporting by Reuters and Associated Press
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies