Top Trump administration officials met Tuesday to further refine a set of options for the president to take action against Iran amid its deadly crackdown on protesters.

President Trump expressed uncertainty over whether Iranian opposition figure Reza Pahlavi would be able to muster support in Iran to eventually take over.

The president has told his advisers he would want any action to deliver a decisive blow to the Iranian regime, but so far he hasn't gotten that guarantee from them, sources say.

President Donald Trump said on Monday that countries that do business with Iran will face a new 25% tariff. The announcement appears to mean goods from China, a major trading partner of both Iran and the United States,

Janelle Manes, a self-employed voter in Wisconsin who owns her own business, shared a differing opinion. She told ABC News that she does not agree completely with Trump’s decision to strike Venezuela and take Maduro.

Attacking Iran with airstrikes is "on the table" as President Donald Trump weighs military options in the country, his press secretary said.

Iran Closes Airspace To Commercial Aircraft For Hours<br />Iran closed its airspace to commercial flights for hours without explanation early Thursday as tensions remained high with the United States over Tehran's bloody crackdown on nationwide protests.

Pahlavi, 65, is the exiled son of Shah Mohammad Reza Pahlavi of Iran, who was ousted in the 1979 Islamic Revolution that ushered in the Islamic Republic. His name has been a rallying call for protests that started on December 28 and have been met by a violent crackdown that rights groups say has killed thousands.