The January U.S. drone strike in Iraq that killed top Iranian general Qassem Soleimani and nine other people represented a violation of international law, a UN human rights investigator said on Monday.
The United States has failed to provide sufficient evidence of an ongoing or imminent attack against its interests to justify the strike on Soleimani's convoy as it left Baghdad airport, said Agnes Callamard, UN special rapporteur on extrajudicial, summary or arbitrary executions.
The attack violated the UN Charter, Callamard wrote in a report calling for accountability for targeted killings by armed drones and for greater regulation of the weapons.
"The world is at a critical time, and possible tipping point, when it comes to the use of drones. ... The Security Council is missing in action; the international community, willingly or not, stands largely silent," Callamard, an independent investigator, told Reuters.
Callamard is due on Thursday to present her findings to the Human Rights Council, giving member states a chance to debate what action to pursue. The United States is not a member of the forum, having quit two years ago.
Soleimani, leader of the Revolutionary Guards' Quds Force, was a pivotal figure in orchestrating Iran's campaign to drive U.S. forces out of Iraq, and built up Iran's network of proxy armies across the Middle East. Washington had accused Soleimani of masterminding attacks by Iranian-aligned militias on U.S. forces in the region.
"Major General Soleimani was in charge of Iran military strategy, and actions, in Syria and Iraq. But absent an actual imminent threat to life, the course of action taken by the U.S. was unlawful," Callamard wrote in the report.
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The Jan. 3 drone strike was the first known incident in which a nation invoked self-defence as a justification for an attack against a state actor in the territory of a third country, Callamard added.
Iran retaliated with a rocket attack on an Iraqi air base where U.S. forces were stationed. Hours later, Iranian forces on high alert mistakenly shot down a Ukrainian passenger airliner taking off from Tehran.
Iran has issued an arrest warrant for U.S. President Donald Trump and 35 others over Soleimani's killing and has asked Interpol for help, Tehran prosecutor Ali Alqasimehr said on June 29, according to the semi-official Fars news agency.