Iran live updates: US blockade of Iran's Strait of Hormuz ports to begin Monday

President Donald Trump accused Iran of violating its agreement with the U.S. over the Strait of Hormuz, saying in a social media post on Thursday that it was "doing a poor job" of allowing oil to pass through the waterway.

"Iran is doing a very poor job, dishonorable some would say, of allowing Oil to go through the Strait of Hormuz. That is not the agreement we have!" he wrote.

Trump's post follows another in which he told Iran not to charge fees to oil tankers passing through the strait.

President Donald Trump issued a warning on social media Thursday while responding to "reports" that Iran is collecting tolls in the Strait of Hormuz, saying "they better not be and, if they are, they better stop now!"

This comes as the president suggested to ABC News Chief Washington Correspondent Jon Karl on Wednesday that the U.S. and Iran could work together to collect tolls.

"We're thinking of doing it as a joint venture. It's a way of securing it -- also securing it from lots of other people," Trump told Karl in a phone call, when asked if he's okay with the Iranians charging a toll for all ships that go through the Strait of Hormuz.

The U.S. State Department will host a meeting next week in order to "discuss ongoing ceasefire negotiations" with Israel and Lebanon, a department official confirmed to ABC News.

The talks are expected to be direct, with U.S. ambassador to Lebanon Michel Issa playing a mediator role. Both Israel and Lebanon are expected to be represented by their respective ambassadors to Washington.

A U.S. official said that plans are still being finalized.

At least 1,888 people have been killed and another 6,092 were injured in Israeli strikes across Lebanon since March 2, according to the Lebanese Ministry of Public Health.