European powers have announced they are prepared to halt new sanctions against Iran if Tehran addresses concerns about its nuclear program within the next month. The snapback mechanism to reinstate United Nations sanctions was triggered after Iran failed to comply with commitments made in a 2015 nuclear deal, but diplomats emphasized that this move does not signal the end of diplomatic efforts. Iran has rejected the offer, calling it insincere and accusing the European nations of blackmail, while also warning of adverse consequences, including a possible withdrawal from the Nuclear Non-Proliferation Treaty. Russia and China have proposed extending the resolution supporting the 2015 deal, and high-level meetings between Iranian and Russian leaders are planned as tensions escalate over the future of Iran's nuclear program.