Trump Warns Iran: "Big Price" if Protesters Harmed

U.S. President Donald Trump has issued a sharp warning to Iran's government. He said the country would pay a "big price" if it kills any protesters. This came after a top Iranian security official threatened the U.S. The official warned America not to interfere in Iran's internal affairs. The exchange of threats happened as protests spread across Iran. The protests began over a sudden increase in fuel prices. They have since widened into demonstrations about the country's struggling economy. President Trump posted his warning on Twitter. He expressed support for the Iranian people. The Iranian official responded by calling U.S. leaders "clowns." International observers are watching the situation closely. They note the protests are some of the most significant in Iran in recent years.