US Secretary of State Marco Rubio said civilian deaths could occur in war, but insisted US forces would never deliberately harm civilians.

US Secretary of State Marco Rubio said civilian deaths could occur in war, but insisted US forces would never deliberately harm civilians.

"I want to be clear: The United States never targets civilians. Ever," Rubio said. "Some citizens are caught in the crossfire," he added. "The country that does target its citizens is Iran."