Iranian President Hassan Rohani has called the recently strengthened U.S. sanctions on his country "a kind of economic terrorism." In his address to the UN General Assembly on September 25, Rohani also accused the U.S. administration of wanting to overthrow Iran's government. (UNTV via Reuters)

U.S. President Donald Trump pledged further sanctions against Iran, accusing it of corruption, aggression, and expansionism, in his speech at the United Nations General Assembly on September 25.