What began with surprise US and Israeli strikes on Iran one month ago has hardened into a grinding stand-off, with no clear way out.

The conflict’s opening blows on February 28 killed senior leaders in Tehran, including Supreme Leader Ali Khamenei – prompting retaliatory missile and drone attacks on Israel, US bases and Gulf infrastructure.

Years of tension over Iran’s nuclear programme and its regional influence have now boiled over into open warfare, with diplomacy faltering as both sides entrench their positions.

On the ground in Iran, the violence is worsening what was already a strained human rights situation. News reporting from within the country carries daily images of damaged neighbourhoods, overwhelmed hospitals and families fleeing tit-for-tat strikes.

One incident in particular – the US airstrike on a school in Minab in southern Iran that left dozens of girls dead – highlights the scale of the devastation, as well as the war’s murky legal context.

Future war crimes investigators will need to ask some obvious questions. Was the school a civilian site, was it used for military purposes, what precautions were taken and was the civilian harm excessive relative to any military........

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