Intelligence gathered by U.S. agencies presents a pessimistic outlook on whether the Iranian regime will ultimately agree to nuclear concessions sought by the Trump administration during detailed negotiations set to take place in the coming weeks, according to two U.S. officials familiar with the matter.

The findings, which are largely based on signals intelligence gathered from senior Iranian officials, were presented to the president and other members of his cabinet by CIA Director John Ratcliffe in the days before the memorandum of understanding with Iran was electronically signed, they said.

Israel has also shared intelligence with the U.S. that suggests Iran will not agree to a final deal the Trump administration would deem acceptable, but it’s unclear whether the president was briefed on those findings, one official said.

The findings of the U.S. agencies appeared to deepen skepticism among the more hawkish members of the president’s cabinet, including Ratcliffe, Secretary of State Marco Rubio and Secretary of Defense Pete Hegseth, the officials said, adding that they have also privately expressed doubt Iran will comply even with the terms included in the memorandum of understanding.

-ABC News' Shannon K. Kingson and Cindy Smith

Iran's Islamic Revolutionary Guard Corps accused Israel of violating the ceasefire in southern Lebanon "84 times in the past two days" after President Donald Trump "declared the end of the war," Iran's semi-official Fars News Agency said Tuesday.

The IRGC warned that if Israel does not end its military attacks on southern Lebanon, it should expect a "harsh response" from Iran.

The Israel Defense Forces said its Air Force intercepted "several rockets" that were launched by Hezbollah toward the area in which the IDF is operating in southern Lebanon on Tuesday.

"Shortly afterward, the Israeli Air Force struck and dismantled the launcher from which some of the rockets were fired toward IDF soldiers in southern Lebanon," the IDF said in a statement to ABC News.

Israel asked the U.S. to see the memorandum of understanding, but the request was denied, according to an Israeli source and a U.S. official familiar with the matter.

The officials confirmed that the Israeli government has been thoroughly briefed on the MOU's contents.

-ABC News' Jordana Miller and Shannon K. Kingston