Iraqi officials said the embassy's recently installed C-RAM air defense system may have attempted to intercept the rocket.
Two senior Iraqi officials said the 14 men who were arrested had ties to an Iran-backed militia group.
An F-15E Eagle fighter jet carried out the strikes, which killed an estimated five ISIS fighters.
Block was shot and killed Aug. 16, 2007 by Staff Sgt. Paul Brandon Norris, who then turned the weapon on himself.
This is the third attack this month.
"The Dude" abides -- and by "abides" we mean train on route clearance procedures.
The Katyusha rocket hit an empty house, causing minor damages.
The Defense Department has identified all seven combat search and rescue airmen killed in the HH-60 Pave Hawk crash in Iraq.
The mountain’s name -- Mount POW/MIA -- honors prisoners of war and troops missing in action from U.S. conflicts.
The most civilian victims were in Afghanistan, with 108 deaths and 75 injured, the Pentagon said.