FILE— In this March 26, 2020 file photo, a member of the Iranian army walks past rows of beds at a temporary 2,000-bed hospital for coronavirus patients set up by the army at the international exhibition center 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. Initially overwhelmed, Tehran now seeks to sway international opinion over U.S. sanctions by highlighting its struggles with COVID-19. (AP Photo/Ebrahim Noroozi, File)