Prime Minister Benjamin Netanyahu told Fox News on Friday that his fight against the nuclear deal between Iran and the world powers is done, and that he is ready to start a dialogue about security understandings with the Obama administration on the "day after" the deal, and over upgrading the Israeli army's offensive and defensive capabilities.

Senior American officials told Haaretz on Thursday that Netanyahu informed the U.S. administration that his speech on Thursday at the UN General Assembly, in which he dealt extensively with the nuclear deal, would be his swan song on his public fight against the accord.

"They told us right after the speech that the Iran part was intended to close the chapter on the dealtime will tell if this is the case," one U.S. official said, citing Netanyahu's aides.

The senior American officials stressed that the government got the impression from the message by Netanyahu’s people that after many months of fighting the nuclear deal, the prime minister is ready to move on to talking about what comes next and the ways in which the United States and Israel will jointly deal with Iran and its subversive activities in the region.

Netanyahu did not deny in a press briefing Thursday night that he sent such a message to the Americans and sufficed with a general statement that “I didn’t give any approval of the nuclear deal.” In the Fox interview on Friday Netanyahu made a clear statement.

"This was the day after. It began today. We started talking about what we need to do I look forward to the opportunity to discuss with President Obama how to put flesh on his serious commitment to bolster Israel's security in the face of this new challenge," Netanyahu told Fox.

Netanyahu convened with U.S. Secretary of State John Kerry on Friday for an initial discussion. In mid-October Defense Minister Moshe Ya'alon will arrive in the U.S., and at the beginning of November Netanyahu will meet with U.S. President Barack Obama at the White House for their first meeting in over a year.

In the press briefing on Thursday Netanyahu stressed the need to focus on several essential issues to continue the struggle against Iran.

He called for uncompromising implementation of the nuclear deal, including confirmation that inspectors from the International Atomic Energy Agency are carrying out effective inspections of Iran’s nuclear facilities.

“Force Iran to meet all its nuclear obligations,” said Netanyahu. “Confirm that Iran’s violations are not swept under the Persian rug.”

Second, he called for a meticulously maintained mechanism for snapback of sanctions in order to make sure how, when and in response to which violations sanctions will be reimposed.

Finally, he called for international action against Iranian subversion in the region and its support for terrorist organizations like Hezbollah and Hamas. Netanyahu believes that the United States must now actively support others fighting Iranian aggression, first and foremost Israel.