The Biden administration said on Friday that Israel’s use of US-provided weapons in Gaza likely violated international humanitarian law but that wartime conditions prevented US officials from determining that for certain in specific airstrikes. The finding of “reasonable” evidence to conclude that the US ally had breached international law protecting civilians in the way it conducted its war on Gaza was the strongest statement that the Biden administration has yet made on the matter. It was released in a summary of a report being delivered to Congress on Friday. But the caveat that the adminis…