The Pentagon building is seen in Arlington, Virginia, U.S. October 9, 2020.
"We don't necessarily see that Iran has explicitly ordered them to take these kinds of attacks," Pentagon spokesperson Brigadier General Patrick Ryder told reporters.
Pressed on the issue, Ryder added: "We haven't seen a direct order, for example, from the Supreme Leader saying: 'Go out and do this.'"
Ryder, however, said that the United States ultimately holds Iran responsible for such attacks by militant groups "by virtue of the fact that they are supported by Iran."
The United States has also sent warships and fighter aircraft to the region to try to deter Iran and Iran-backed groups from widening the conflict.
Persons:
Carlos Barria, Ayatollah Ali Khamenei, Patrick Ryder, Ryder, Lloyd Austin, Austin, Asad, Phil Stewart, Idrees Ali, Chizu Nomiyama, Howard Goller
Organizations:
Pentagon, REUTERS, Rights, United, Iran's, Reuters, Biden, Defense, Area Defense, Thomson
Locations:
Arlington , Virginia, U.S, United States, Iraq, Syria, Iran, Israel, Gaza, Tehran, Islamic Republic, Iranian, Yemen