White House names Iranian proxy groups responsible for attack
Biden can retaliate without effect on hostage deal, Washington says.
Kataib Hezbollah Iraqi militia gather ahead of the funeral of the Iraqi militia commander Abu Mahdi al-Muhandis, who was killed in an air strike at Baghdad airport, in Baghdad, Iraq, January 4, 2020. (photo credit: REUTERS/THAIER AL-SUDANI/FILE PHOTO)Updated: 
