Israel said late on Thursday that Washington had assured it that Israeli security interests would be taken into account in any future agreement with Iran.
Prime Minister Benjamin Netanyahu's office said that US President Donald Trump had promised that a final agreement with Tehran would include the removal of Iran's enriched uranium and the dismantling of its uranium enrichment facilities.
Trump also assured Netanyahu that any agreement would restrict Iran's production of missiles and end Tehran's support for its proxies in the region, Netanyahu's office said. These include the Palestinian militant group Hamas and the Lebanese Shiite militia Hezbollah.
According to Netanyahu's office, Trump and Netanyahu spoke about an "emerging memorandum of understanding" between the United States and Iran aimed at entering negotiations. Israel is not involved in the talks, Netanyahu's office said.
Such a framework agreement is widely expected to lay the groundwork for more detailed negotiations on the main points of contention. Efforts to reach such an agreement have been under way for weeks.
Trump said there has been progress in the negotiations with Iran and raised the possibility of a signing at the weekend.
Iran's nuclear programme is one of the main points of conflict with the US and Israel. Israel sees the programme as an existential threat. Iran has repeatedly threatened to destroy the Jewish state. At the same time, Iran's political leadership has insisted that it is not seeking nuclear weapons.
However, the International Atomic Energy Agency (IAEA) and many countries have expressed concern in recent years that Tehran was moving ever closer to being able to produce such weapons.
