Chinese Foreign Minister Wang Yi voiced support for Iran and called for "maintaining the momentum of the ceasefire and negotiations."

Wang spoke on Wednesday with Iranian Foreign Minister Abbas Araghchi, according to a readout posted by the Chinese ministry.

"Wang Yi stated that China, as always, supports Iran in safeguarding its sovereignty, security, and national dignity," the readout said.

Wang's office said the minister also told Araghchi that "freedom of navigation and safety in the international strait should be guaranteed, and efforts to restore normal navigation in the strait are the unanimous call of the international community."

The U.S. this week began a blockade of the strait. "U.S. service members continue to monitor and patrol regional waters in support of the U.S. blockade on ships entering or exiting Iranian ports," U.S. Central Command said early on Thursday.

-ABC News’ Karson Yiu

In a post on his social media platform, President Donald Trump said the leaders of Israel and Lebanon would be speaking on Thursday, following high-level talks between Israeli and Lebanese diplomats mediated by the U.S. earlier this week. 

"Trying to get a little breathing room between Israel and Lebanon," Trump said in the post. "It has been a long time since the two leaders have spoken, like 34 years. It will happen tomorrow. Nice!"

The White House did not immediately respond to questions about who would be speaking from the Israeli and Lebanese sides.

Trump's announcement of additional talks between the two countries came after the State Department convened a trilateral meeting in Washington, D.C. on Tuesday with Secretary of State Marco Rubio and the Israeli and Lebanese ambassadors.

The State Department on Tuesday called this week's talks "the first major high-level engagement between the governments of Israel and Lebanon since 1993."

-ABC News' Nicholas Kerr

Iran has suspended exports of petrochemical products until further notice, according to Iranian State run Mehr News. This does not include crude oil exports.

This is being done to "to meet domestic market needs," according to Mehr.

-ABC News' Cindy Smith

Administration officials familiar with the ongoing negotiations between the U.S. and Iran remain bullish that another in-person meeting between the two will be arranged soon and likely take place before the ceasefire expires next week.

Communication between negotiators from both countries have continued at a steady clip since the first round of talks wrapped, two U.S. officials said, adding that these conversations have taken place primarily though indirect channels but also via direct lines.

The administration’s goal is to bring both sides to the brink of an overarching deal to end the conflict that can then be pushed over the finish line in a second face-to-face meeting, according to the officials.

The officials acknowledge that technical talks to hammer out the fine details and implementation of the arrangement will likely take longer to complete, perhaps eventually necessitating an extension of the initial ceasefire, but that pushing back the truce’s expiration date isn’t a top priority for the administration at the moment.

Vice President JD Vance, Special Envoy Steve Witkoff and Jared Kushner have continued to be involved in negotiations throughout the week, but it’s not guaranteed that all three would represent the U.S. in second round of talks, one official said.

-ABC News' Shannon K. Kingston

White House press secretary Karoline Leavitt denied reports that the U.S. has formally request an extension of the ceasefire with Iran on Wednesday.

"At this moment, we remain very much engaged in these negotiations, in these talks," Leavitt said during a press briefing.

Leavitt said the White House feels good about the prospects of reaching a deal with Iran.

Leavitt also said future negotiations can be expected to take place in Islamabad again, and she praised the Pakistanis for their role in serving as a mediator between the U.S. and Iran.

“They would very likely be in the same place as they were last time, yes,” she said.