According to CoinMeta, and as reported by Al Jazeera, U.S. President Donald Trump is willing to consider lifting sanctions against Iran and releasing frozen funds if there is "concrete progress" on the Iranian nuclear issue. U.S. officials stated that the United States and Iran are engaged in "active and constructive" discussions through intermediaries, but no agreement will be reached if the nuclear issue cannot be resolved. The official mentioned that Iran has shown some flexibility on the nuclear issue, but the two sides have not yet agreed on the timing for implementing these commitments. Trump previously rejected Iran's proposal to reopen the Strait of Hormuz, calling it "unacceptable." Trump indicated that he expects to hold more talks with Iran this week. The U.S. side is led in the negotiations by Special Envoy for Middle East Affairs Brett McHale, Jared Kushner, Vice President Mike Pence, and Secretary of State Mike Pompeo. U.S. Ambassador to the United Nations Mike Pompeo said that Trump is skeptical about Iran's proposals, believing that Iran wants to obtain all conditions before proceeding with further negotiations. White House officials also noted that the U.S. is cautious about Iran's commitments, as Iran had previously violated the understanding memorandum reached in July by attacking commercial vessels.