Iran's president on Sunday lashed out at criticism of its lagging response to the worst coronavirus outbreak in the Middle East, saying the government has to weigh economic concerns as it takes measures to contain the pandemic.

Iran's president said Thursday that there is "no limit" to the country's enrichment of uranium following its decision to abandon its commitments under the 2015 nuclear deal in response to the killing of its top general in a U.S. airstrike.

Iranian President Hassan Rouhani on Thursday said that regional issues should be resolved through the cooperation of regional states.

Iran has discovered a new oil field in the country's south with over 50 billion barrels of crude oil, its president said Sunday, a find that could boost the country's proven reserves by a third as it struggles to sell energy abroad over U.S. sanctions.

"The U.S. government has realized that its pressures, including those of sanctions, against the Islamic republic have been a failed policy," Iranian President Hassan Rouhani said here on Monday.