"These sanctions also send a message to all states -- particularly those with nuclear aspirations -- that international standards cannot be flouted without consequence," Harper said.
The sanctions bar dealings with designated individuals and entities involved in nuclear or weapons of mass destruction (WMDs) proliferation, including key members of the Islamic Revolutionary Guard Corps, he said.
"They ban new investments in Iran's oil and gas sector and the export of goods to Iran that could contribute to nuclear proliferation," Harper added.