European signatories to Iran nuclear deal asked US to exempt EU firms active in Iran from secondary sanctions.

In a letter, dated 4 June , European ministers from Germany, France and Britain singled out key areas they wanted exempted, including pharmaceuticals, healthcare, energy, automotive, civil aviation, infrastructure and banking.

"An Iranian withdrawal from the (nuclear agreement) would further unsettle a region where additional conflicts would be disastrous," said the foreign and finance ministers and top EU diplomat in the letter to the U.S. Treasury Secretary and U.S. Secretary of State seen by Reuters on Wednesday.

On May 8, 2018, US President Donald Trump announced his decision to cease the United States’ participation in the Joint Comprehensive Plan of Action (JCPOA), and to begin re-imposing the U.S. nuclear-related sanctions that were lifted to effectuate the JCPOA sanctions relief.

After the unilateral withdrawal of US President Trump from the nuclear agreement and the reinstatement of sanctions, Iran says it will not accept to be both restricted by the provisions of the JCPOA and bear the brunt of US sanctions that were supposed to be removed under the agreement. Iran is still committed to the deal, waiting for the EU to provide it with solid guarantees that the country's economic interests will continue to be met despite US threats to punish companies doing business with Iran. 

European powers still stress their commitment to upholding the pact and have intensified efforts to save it.