Ukraine's top general Valeriy Zaluzhny shared a video showing the effectiveness of US-provided M982 Excalibur shells against Russian forces. One downside of the shells is the cost — each Excalibur round costs around $100,000, the documents say, compared with just a few hundred dollars for a conventional munition such as the M795, the US military's standard unguided 155 mm shell. It is thought that the US has sent around 3,000 Excalibur rounds to Ukraine since Russia invaded last year, Forces