U.S. special envoy Steve Witkoff and Iranian Foreign Minister Abbas Araghchi are expected to hold talks Friday in Istanbul on a potential nuclear agreement, Axios reported Monday, citing two sources familiar with the plans.

The report noted that preparations are underway for the meeting, while another cautioned that plans remain fluid and have not yet been finalized.

The planned talks are taking place after U.S. President Donald Trump's statement last week in a social media post that a massive "armada" was heading toward Iran, while urging Tehran to enter negotiations immediately. He later said that Iran was "seriously talking" with the U.S.

The U.S. president has threatened military action against Iran amid rising tensions following anti-government protests in Iran in late December.

Iranian officials have warned that any U.S. attack would draw a "swift and comprehensive" response.