FILE — In this Saturday, April 4, 2020 file photo, people wearing face masks and gloves to protect against the new coronavirus walk past closed shops at the Tajrish traditional bazaar in northern Tehran, Iran. Even as both face the same invisible enemy in the coronavirus pandemic, Iran and the U.S. remain locked in retaliatory pressure campaigns that now view the outbreak as just the latest battleground. (AP Photo/Vahid Salemi, File)