"Today, I am waiving the application of certain nuclear sanctions, but only in order to secure our European allies' agreement to fix the terrible flaws of the Iran nuclear deal", Trump said in a statement Friday.
"I hereby call on key European countries to join with the United States in fixing significant flaws in the deal, countering Iranian aggression, and supporting the Iranian people", he said.
He wants to require more robust inspections of nuclear facilities.
Trump is hoping to fix the sunset clause in the deal, which removes restrictions on Iran's nuclear programs by the end of 10 years, as well as make clear that Iran's nuclear and missile programs are "inseparable" and in need of restrictions. "Rather than repeating tired rhetoric, the U.S. must bring itself into full compiance - just like Iran", he said.
The Trump administration's sanctions also are intended at hindering Iran's ballistic missile program and other alleged "illicit activities".
Iran has complained that US sanctions not connected to nuclear activity have effectively cancelled out any financial benefits it expected from the 2015 deal.
One of the individuals is Ayatollah Sadeq Amoli Larijani, the head of Iran's judicial system. Instead of developing Iranian society, Khamenei and his henchmen steal the people's wealth and national treasure and use both to line their pockets and pay for their wars abroad.
Mr Trump was a fierce critic during the 2016 election campaign, calling it the "worse deal ever" and promising to scrap it if he became president. Raj Bhala, an international trade law expert who has studied sanctions, can discuss the announcement, its effects, the nuclear deal, Iran, the country's economy, economic protests in Iran, the U.S. -Iran relationship and related topics.
Iran vowed on Saturday that it will retaliate against US President Donald Trump's decision to slap its judiciary head with sanctions.
Russia's Deputy Foreign Minister, Sergei Ryabkov, described Mr Trump's comments as "extremely negative".
Diplomacy Works, a pressure group set up by former secretary of state John Kerry to defend the deal, was scathing.
Trump, the same day he waived the nuclear sanctions, imposed new sanctions on Iran for its human rights abuses and its military adventurism.
Iran also rejected any changes to its nuclear deal with world powers.
The waivers were accompanied by other non-nuclear sanctions and a stern warning that Trump will pull out of the deal if the fixes aren't made. It prevents Iran from developing nuclear weapons while offering sanctions relief to allow the Islamic Republic to participate in international commerce and banking.
The Treasury said Larijani was "responsible for ordering, controlling, or otherwise directing, the commission of serious human rights abuses against persons in Iran or Iranian citizens or residents".
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