FILE PHOTO: U.S. Secretary of State Mike Pompeo testifies that North Korea has not responded in recent days to queries by the United States to prepare logistics for an upcoming summit during his appearance at a Senate Foreign Relations Committee hearing on Capitol Hill in Washington, U.S., May 24, 2018. REUTERS/Toya Sarno Jordan/File Photo

WASHINGTON (Reuters) - The United States has granted exemptions to eight countries allowing them to temporarily continue buying Iranian oil, Secretary of State Mike Pompeo said on Monday, as Washington reimposed sanctions on Iran’s banking, energy and shipping industries.

Some of the eight countries - China, India, Greece, Italy, Taiwan, Japan, Turkey and South Korea - include OPEC member Iran’s top customers.

Pompeo said more than 20 countries have already cut their oil imports from Iran, reducing purchases by more than 1 million barrels per day.