Iraq is the second-biggest producer in the Organization of Petroleum Exporting Countries, which Trump has regularly criticized for trying to keep oil prices high.

Iran’s deputy foreign minister Saeed Khatibzadeh has described his country’s nuclear program as still “intact” despite admitting that US and Israeli strikes badly damaged facilities earlier this year.

US strikes on three Iranian nuclear sites in June slowed down the nuclear program, likely buried Iran’s stockpile of highly enriched uranium, and effectively paused enrichment activities. The attacks ...