It was also uncertain whether the opening of the centrifuge plant would have any significant impact on Iran's nuclear program, which continues to be closely monitored by the International Atomic Energy Agency.
Earlier on Monday, Iran's Supreme Leader Ayatollah Ali Khamenei hinted at the move by warning European leaders against their "dream" of Tehran continuing to curb its nuclear programme while finding itself under new economic sanctions.
Netanyahu, on a tour to persuade European countries to follow the United States administration of Donald Trump in tearing up a nuclear non-proliferation deal with Iran, said the country was using proceeds from eased sanctions to finance conflict.
The Joint Comprehensive Plan of Action (JCPOA), better known as the Iran nuclear deal, was signed in 2015 by United States, China, Russia, France, Germany and Britain (P5+1) and Iran following years of negotiations.
"The people of Iran and the government of Iran will never tolerate both suffering from sanctions and nuclear restrictions", said Khamenei.
Iran's Supreme Leader has ordered the increase of his uranium enrichment capacity to improve the country's nuclear capability "in case it's needed".
Israel is considered the leading military power in the Middle East and believed to be the only country in the region to possess nuclear weapons.More news: Mueller accuses Manafort of attempted witness tampering
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"This will inflame another religious war, this time a religious war inside Syria, and the consequences would be many, many more refugees, and you know exactly where they will come", he said.
It's been more than a month since President Trump officially ended the Iran nuclear agreement and the risky Iranian regime has been ramping up hostilities against the United States and Israel ever since.
Under the 2015 nuclear deal, Iran stopped enriching uranium to the 20 percent level that would allow for rapid development of a nuclear weapon and agreed to a limit of under 5 percent.
The Trump administration argues the nuclear deal doesn't address other unrelated issues such as Iran's ballistic missiles, regional influence, support for "terrorist" groups and human rights.
The Iran deal paved the way for the partial lifting of worldwide sanctions against the country, in exchange for Tehran curbing its nuclear programme for several years.
Khamenei has dismissed these suggestions, and laid out Iran's demands for staying in the deal.
"The day before yesterday Ayatollah Khamenei, the ruler of Iran, declared his intention to destroy the State of Israel". We commit, and I commit again, that we will not let that happen, ' he said.