New Delhi, Jan. 12 -- U.S. President Donald Trump said Iran wants to negotiate with Washington after his threat to strike the Islamic Republic over its bloody crackdown on protesters, a move coming as activists said Monday the death toll in the nationwide demonstrations rose to at least 544.

Iran had no immediate reaction to the news, which came after the foreign minister of Oman - long an interlocutor between Washington and Tehran - traveled to Iran this weekend. It also remains unclear just what Iran could promise, particularly as Trump has set strict demands over its nuclear program and its ballistic missile arsenal, which Tehran insists is crucial for its national defense.

Iranian Foreign Minister Abbas Araghchi, speaking to foreign...