Protesters demonstrate over the U.S. airstrike in Iraq that killed Iranian Revolutionary Guard Gen.
Qassem Soleimani in Tehran, Iran, Jan. 3, 2020. Iran has vowed "harsh retaliation" for the
U.S. airstrike near Baghdad’s airport that killed Tehran’s top general and the architect of its
interventions across the Middle East, as tensions soared in the wake of the targeted killing.