The Iranian Ambassador to the United Nations says.... the Trump administration's newly restored sanctions on Tehran are a violation of a UN Security Council resolution,... which unanimously endorsed the 2015 Iran nuclear deal.<br /> Ambassador Gholamali Khoshroo( ) wrote a letter to UN Secretary-General Antonio Guterres,... calling for a collective response against the "irresponsible conduct" of the U.S.,... and urged the member nations to hold the U.S. accountable for such acts.<br />He requested for the letter to be shared with the 15 members of the Security Council and the 1-hundred-93 members of the UN General Assembly. <br />