A US soldier with an Iraqi trainee during infantry squad tactical training at Camp Taji, Iraq. US Army photo by Master Sgt. Mike Lavigne, 1st Infantry Division Public Affairs

BAGHDAD (Reuters) - A prominent Iraqi militia backed by Iran, Harakat Hezbollah al- Nujaba, said on Thursday US President Donald Trump's decision to recognize Jerusalem as Israel's capital could become a "legitimate reason" to attack US forces in Iraq.

"Trump's stupid decision ... will be the big spark for removing this entity (Israel) from the body of the Islamic nation, and a legitimate reason to target American forces," the group's leader Akram al-Kaabi said in a statement.

(Reporting by Maher Chmaytelli; editing by Larry King)