US Forces Kill Two Senior Iranian Military Officials in Targeted Attack

One of those figures was the head of Iran's equivalent to military intelligence and black-ops.

...The high-profile assassinations are seen as a massive blow to Iran, which has been locked in a long conflict with the United States that escalated sharply last week with the storming of the US embassy perimeter in Iraq by pro-Iranian militiamen following an American air raid on an Iraqi Shi’ite militia. 

Soleimani, who has led the foreign arm of the Revolutionary Guards and has had a key role in fighting in Syria and Iraq, acquired celebrity status at home and abroad. 

He was instrumental in the spread of Iranian influence in the Middle East, which the United States and Tehran’s regional foes Saudi Arabia and Israel have struggled to keep in check. 

He survived several assassination attempts against him by Western, Israeli and Arab agencies over the past two decades. 
 
Soleimani’s Quds Force, tasked with carrying out operations beyond Iran’s borders, shored up support for Syrian President Bashar al-Assad when he looked close to defeat in the civil war raging since 2011 and also helped militiamen defeat Islamic State in Iraq. 

Source.