U.S. President Donald Trump's administration temporarily exempted Japan and seven other parties from its ban on Iranian oil imports as Washington reimposed sanctions against Tehran on Monday as part of its "maximum" economic pressure campaign against the Islamic republic.

The administration granted a 180-day waiver period to the eight parties, which include China, India, South Korea, Italy, Greece, Taiwan and Turkey, Secretary of State Mike Pompeo told reporters.

Earlier Monday, the administration reimposed sanctions on Iran's energy, banking, shipbuilding and shipping sectors to compel Tehran to end its nuclear program and support for militant groups in the Middle East.