US President Donald Trump administration expressed optimism on Wednesday about the prospect of reaching an agreement with Iran, with the White House noting that Pakistan is likely to host a second round of negotiations, CNN reported. The statement followed a meeting between Iranian Foreign Minister Abbas Araghchi and Pakistan's Army Chief Asim Munir, during which Araghchi reiterated Tehran's commitment to promoting peace. 

Tensions remain high, however, as the Iranian military warned it would restrict shipping in the Red Sea if the US continues to blockade Iranian ports. The US Central Command claimed the blockade has "completely cut off" Tehran's maritime trade, though Iranian media reported that four vessels still traveled to and from Iran on Wednesday. 

Iran has so far not agreed to a US request to extend the ongoing two-week ceasefire. Iranian officials argue that Washington should first fulfill its commitments under the current truce agreement rather than seek an extension and should cease what they describe as excessive demands in the negotiations.

Amid the escalating maritime standoff, Iran has been exchanging messages with the United States through Pakistan, as both Tehran and Washington actively push to arrange a follow-up dialogue. CGTN brings you the latest.