Four have been killed by Russian strikes in Ukraine, while four others died in Russia and Crimea, according to reports.
Ukraine is ramping up short-, medium- and long-range drone production to bring Russia’s war to a standstill.
The attacks appear to be the latest phase of Ukraine's bid to choke off supplies and routes into and out of occupied Crimea.
Eastern Europe correspondent Sarah Rainsford explains why Crimea is a target for Kyiv, and why the peninsula matters to Vladimir Putin.