WASHINGTON (CBSDC/AP) — President Barack Obama says that every path Iran had to develop a nuclear weapon will be cut off after a tentative nuclear deal was reached.

On Thursday, the United States, Iran and five other world powers announced an understanding outlining limits on Iran’s nuclear program so it cannot lead to atomic weapons, directing negotiators toward achieving a comprehensive agreement within three months.

“It is a good deal — a deal that meets our core objectives. This framework would cut off every pathway that Iran could take to develop a nuclear weapon,” Obama told reporters. “Iran will face strict limitations on its program and Iran has also agreed to the most robust and intrusive inspections and transparency regime ever negotiated for any nuclear program in history. So this deal is not based on trust, it’s based on unprecedented verification.”

Obama stated that the deal is not based on trust, but on unprecedented verification.

“If Iran cheats, the world will know it. If we see something suspicious, we will inspect it.” Obama said, adding that “Iran will face more inspections than any other country in the world.”

Obama said the deal will put strict limits on Iran’s nuclear program for the next decade and that under this deal Iran would be a minimum of a year away from acquiring a bomb.

Obama said this deal is “the best option” for Israel.

“It’s no secret that the Israeli Prime Minister and I don’t agree about whether the United States should move forward with a peaceful resolution to the Iranian issue. If in fact Prime Minister Netanyahu is looking for the most effective way to ensure Iran doesn’t get a nuclear weapon, this is the best option,” Obama said. “I believe our nuclear experts can confirm that. More importantly, I will be speaking with the Prime Minister today to make clear that there will be no daylight, there is no daylight when it comes to our support for Israel’s security, and our concerns about Iran’s destabilizing policies and threats towards Israel.”

Obama also called out the critics who questioned going to the negotiating table with Iran.

“So when you hear the inevitable critics of the deal sound off, ask them a simple question: Do you really think that this verifiable deal, if fully implemented, backed by the world’s major powers, is a worse option than the risk of another war in the Middle East?”

Israeli Prime Minister Benjamin Netanyahu posted on Twitter that any deal “must significantly roll back Iran’s nuclear capabilities and stop its terrorism and aggression.”

CBS News correspondent Margaret Brennan reports that the deal limits, but does not destroy, Iran’s nuclear program.

Paul Brandus, founder of West Wing Reports, reports that Obama would like to visit Iran before the end of his presidency.

Reading out a joint statement in Switzerland, European Union foreign policy chief Federica Mogherini said a “decisive step” after more than a decade of negotiations had been achieved. Iranian Foreign Minister Mohammad Javad Zarif followed with the same statement in Farsi. U.S. Secretary of State John Kerry and the top diplomats of Britain, France and Germany also briefly took the stage behind them.

Kerry said there will be “no sunset” to the deal they are working to finalize and that parameters will be implemented in phases.

Mogherini said the seven nations would now start writing the text of a final accord. She cited several agreed-upon restrictions on Iran’s enrichment of material that can be used either for energy production or in nuclear warheads. She said Iran won’t produce weapons-grade plutonium.

Crucially for the Iranians, economic sanctions related to its nuclear programs are to be rolled back after the U.N. nuclear agency confirms compliance.

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