Khoshroo made the remarks in a letter to the UN Security Council in New York on Friday.
Iran's UN envoy stressed the necessity of multilateralism for solving global problems, describing Washington’s unilateral withdrawal from international agreements, including the 2015 Iran nuclear deal, as a challenge to the world order, Press TV reported.
"True multilateralism is founded on inclusion instead of exclusion; cooperation in place of confrontation; equality rather than inequality; rule of law instead of rule of power; pursuing the common goods and long-term objectives of all states, not shortsighted goals of only one state; and solving differences peacefully and justly, not violently and unfairly," Khoshroo said.
"We need such an annual forum to discuss emerging challenges to multilateralism; the latest of which is the doctrine of 'withdrawal from international instruments and institutions' of a member of this council,” he said while referring to the United States.
“This, among others, has resulted in its withdrawal from the Human Rights Council, UNESCO, Paris Agreement, and the Joint Comprehensive Plan of Action,” Khoshroo noted.
The permanent representative of Iran to the UN also added that the global community "should not allow the United States to pursue its unilateral, arrogant and self-centered policy which focuses on continuing to reorder the world order to be founded on power, not law."
In a letter to UN Secretary General Antonio Guterres on November 5, Khoshroo said the United Nations must hold the United States to account for its "illegal" move to reinstate sanctions on Tehran.
Khoshroo emphasized that Iran has scrupulously fulfilled its nuclear-related commitments under the JCPOA, as has been repeatedly and consistently verified by the consecutive reports of International Atomic Energy Agency (IAEA).