The U.S. military shot down an Iranian drone that approached a U.S. aircraft carrier in the Arabian Sea on Tuesday.

"What the enemies of this nation, especially the US, must know is that the motivation of our armed forces to fight the enemy has never been as high as it is today," Abdolrahim Mousavi said.

Trump-Iran latest: US military shoots down Iranian drone as Tehran demands venue change for talks - The incident came ahead of planned talks between Iran and the United States

The president threatened Iran with an approaching warship used in the U.S. military's Venezuela operation, urging them to make a nuclear deal.

"People are extremely angry," a former official said, adding a US attack could lead Iranians to rise up again. "The wall of fear has collapsed. There is no fear left."

The U.S. military has deployed dozens of aircraft and assembled about 12 warships near Iran in the last month, setting the stage for possible strikes.

Iran has imposed a near-total blackout on the internet and other communications, making it difficult to obtain a firm estimate of protester deaths.

The United States is ratcheting up pressure on Iran with sanctions as the threat of an American attack against the regime looms large on the world stage.

Deadly blasts, including one that may have been caused by a gas leak, raised anxiety in the country. “Society is waiting for war,” one Iranian said.

India, Jan. 26 -- As tensions rise across the Middle East, fresh military movements by the United States have reignited a critical question: Is the US preparing to strike Iran? The arrival of the USS Abraham Lincoln (CVN-72) carrier strike group in the Indian Ocean has placed American naval power closer to Iran at a time of growing unrest inside the Islamic Republic and mounting threats from Iran-backed militias in the region.