Business Insider:

Iran will pursue war-crimes charges against President Donald Trump at the International Criminal Court in the Hague over the January 3 assassination of its top commander, Gen. Qassem Soleimani, outside Baghdad's international airport, according to Gholam Hossein Esmaeili, the spokesman for Iran's top judicial authorities.

"We intend to file lawsuits in the Islamic Republic, Iraq and The Hague Court [International Court of Justice] against the military and government of America and against Trump," Esmaeili said at a Tuesday press conference.

"There is no doubt that the US military has done a terrorist act assassinating Guards Commander Lt. Gen. Soleimani and Second-in-Command of Iraq Popular Mobilization Units (PMU) Abu Mahdi al-Muhandis ... and Trump has confessed doing the crime."

Since the killing, Iran's leadership has vowed political, military, and legal revenge for what they call an unlawful killing of one of their greatest military heroes.

Soleimani was well known throughout the Middle East for his diplomatic and military acumen.

Iran's response to the assassination so far has, however, been complicated by the accidental downing of a Ukrainian airliner last week.

While the US is not a signatory to the international court — US presidents have long contended the venue could be used by America's enemies in cases like this to pressure its foreign policy — it still faces a public-relations burden if the case goes to trial.

This is because according to at least one internationally recognized expert, Iran could win.

Shortly after Soleimani's death, Agnes Callamard, UN Special Rapporteur on Extra-Judicial Executions, tweeted that the bar for lethal action by a nation claiming self-defense — as the Trump administration has repeatedly claimed — is extremely high and requires an imminent threat that the US has so far failed to identify.

"The targeted killings of Qasem Soleimani and Abu Mahdi al Muhandi most likely violate international law [including] human rights law," she wrote. "Lawful justifications for such killings are very narrowly defined and it is hard to imagine how any of these can apply to these killings."

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