Afghanistan, Jan. 2 -- U.S. President Donald Trump warned that if Iran "kills peaceful protesters," America is prepared to intervene and protect demonstrators amid rising unrest across the country.

U.S. President Donald Trump has warned that Washington is prepared to support peaceful protesters in Iran if they come under violent attack by the country's security forces. He said the United States would not ignore the killing of civilians exercising their right to protest.

Speaking on Friday, Trump said that if Iranian authorities open fire on demonstrators and violently suppress protests, the United States is ready to take action. His comments were reported by Reuters and framed as a warning against the use of lethal force.

The remarks fol...