Netanyahu made the remarks after Iran said it is fully prepared to enrich uranium at any level and with any amount, in further defiance of United States efforts to squeeze it with sanctions and force it to renegotiate a 2015 nuclear deal with world powers.
France, Germany and Britain - the European partners of the worldwide deal - also urged Tehran to halt its advance towards breaching the cap, as Paris said it was sending a special envoy to Tehran on Tuesday and Wednesday to try and "de-escalate" tensions.
Simon Henderson, Director of Bernstein Program on Gulf and Energy Policy at the Washington Institute for Near East Policy, said he feared that if Iran wanted to raise enrichment it would have to raise it to 20 percent for technical reasons.
Iran announced on Sunday it will shortly boost its uranium enrichment above a cap set by a landmark 2015 nuclear deal, a major breach likely to draw a tougher reaction from President Donald Trump, who has pressured Tehran to renegotiate the pact.
Europe is under pressure from the U.S.to abandon the accord entirely, as Washington did unilaterally past year, and it also is being squeezed by Iran to offset the ever-crippling effects of American economic sanctions.
Iran is upping the ante in its bid to escape the Trump administration's harsh sanctions.
The European parties to the deal along with the EU's diplomatic chief on Tuesday called on Tehran to reverse breaches of the agreement.
Former four-star general Jack Keane told Fox News' Bill Hemmer Monday that Iran's increased enrichment of uranium is an attempt to try and force concessions from the global community, and that the crisis is still some way from breaking out into an open conflict.
Iran is "doing a lot of bad things", Trump said but did not elaborate.
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France, Germany and Britain have also expressed concerns over the latest step taken by Tehran. He went on to say that, if Iran had nuclear weapons, it would be an even bigger threat to the world.
A spokeswoman for EU Foreign Affairs and Security Policy, Maja Kocijancic, said that the EU is anxious about Iran's recent decision to raise uranium enrichment levels beyond JCPOA limits and is calling on Tehran to refrain from further steps that would go against the treaty. The downing of the drone almost led to a USA military strike against Iran; it was called off at the last minute by Trump.
Germany said it was waiting for more information from the International Atomic Energy Agency, whose inspectors monitor Iran's nuclear activities. The remaining parties, along with Russian Federation and the European Union, are Britain, Germany, France and China.
Tehran also exceeded the agreement's 3.67% uranium purity level limit by 0.83%.
With industry sources reporting Iran's crude oil exports dropped in June, . the country's oil minister blamed Washington for destabilizing the oil market on Monday, . saying the USA was "using the oil as a weapon" to pressure Iran.
The Israeli leader has been one of the harshest critics of the nuclear deal.
Tensions wit Iran escalate worldwide; Foreign Relations Committee member Sen.