The Trump administration has reimposed sanctions lifted under it, along with enacting new financial penalties against the regime as part of what the administration has called a "maximum pressure" campaign.
They have covered the conversion of Iran's Arak heavy water research reactor, the provision of enriched uranium for its Tehran Research Reactor and the transfer of spent and scrap reactor fuel overseas.
Russian senator Vladimir Dzhabarov recently criticized the decision of the Trump administration to end American sanction waivers for Iranian nuclear sites as a provocation for Tehran to create a nuclear bomb.
Pompeo said the United States was providing a 90-day waiver extension on Bushehr to "ensure safety of operations".
Multiple foreign companies have been working at these civilian projects to keep Tehran from developing nuclear weapons.
The tweet makes mention of the United States maximum pressure campaign on Iran, vowing to respond to it with "maximum resistance, stiffening resolve and reliance on the national capabilities".
Days after Soleimani's death, Iran shot down a Ukrainian airliner, killing all 176 people on board, setting then ratcheting tensions to simmer, at least momentarily.
On Wednesday, Secretary of State Mike Pompeo confirmed the USA will withdraw the waivers on July 27.
Iran's economy has faced intense pressure over the sanctions, with the United States seeking to block all its oil sales.
On Wednesday, Washington said it was ending sanctions waivers for the countries remaining in the Iran deal, bringing the agreement further to the verge of collapse. In the months that followed Team Trump's decision, officials in Tehran took incremental steps in a unsafe direction, starting up advanced centrifuges, for example, increasing the speed with which Iran can produce enriched uranium. The regime's nuclear extortion will lead to increased pressure on Iran and further isolate the regime from the global community.
The Trump administration in the past had tacitly acknowledged benefits from letting other nations continue the nuclear deal.
"The waivers are a casualty of the administration's no-nonsense approach toward global legitimacy of Iran's nuclear activities", Andrea Stricker, a research fellow at the Foundation for Defense of Democracies, told JNS.
Meanwhile, Russian Senator Vladimir Dzhabarov said on Thursday that the U.S. is "provoking Iran to create a nuclear bomb".
"We are taking these actions now because the regime continues to use its nuclear program to extort the worldwide community". This includes the Arak reactor conversion, the provision of enriched uranium for the Tehran research reactor, and the export of Iran-spent and scrap research reactor fuel.
The CEO of the Washington DC-based geopolitical risk consultancy said the latest decision of the US Administration regarding Iran "is going to be another development that just adds more friction to the Washington-Brussels relationship when it comes to the Iran file".
FILE - In this photo released by the Atomic Energy Organization of Iran, technicians work at the Arak heavy water reactor's secondary circuit as officials and media visit the site, near Arak., Dc. "That is the nature of modern terrorism", said Hook, who oversees Iranian affairs at the State Department, at a Wednesday evening conference call.
The statement said the sanctions violate global law.