Multiple outlets report that a Russian missile strike kills 10 people at an arms-related event in Ukraine. The attack occurs during what is described as a defence or arms fair, where military equipment and related activities are taking place. The reports indicate the strike results in fatalities, with additional injuries not consistently quantified across the brief summaries provided.

The sources also characterize the incident as part of the ongoing war between Russia and Ukraine, occurring in the context of large public or industry-facing defence gatherings. Details such as the exact location within Ukraine, the time of day, and the precise nature of the event are not specified in the provided source text.

Overall, the accounts agree on the core facts: a Russian missile strike hits the Ukrainian arms fair or defence event and causes 10 deaths. Further specifics would depend on full reporting from each outlet, including official statements, casualty breakdowns, and confirmation of the target and circumstances.