During the Trump presidency, the United States primarily targeted alleged fighters from two main terror networks operating in Yemen: Al Qaeda in the Arabian Peninsula, and Islamic State in Yemen. While declared US actions are often accompanied by an official estimate of militants killed, local reporting may indicate differing claims, resulting in a fatality range.
US actions in Yemen are carried out both by US Central Command (CENTCOM) and by the Central Intelligence Agency (CIA). While CENTCOM publicly declares some of its actions, others remain secret. CIA strikes are officially neither confirmed nor denied. In addition, there are some actions in Yemen where the belligerent is presently contested (eg possibly by the UAE), or unknown.