Perspective: Crimea was Putin’s trophy. Ukraine is turning it into a test of command, supply lines and political nerve. Russian-installed authorities declared a state of emergency in Crimea on Friday, as repeated, intensified Ukrainian strikes on the peninsula lead to widespread power outages and fuel shortages. Crimea, autonomous republic, southern Ukraine. The republic is coterminous with the Crimean Peninsula, lying between the Black Sea and the Sea of Azov. In 2014 Russia covertly invaded and illegally annexed Crimea, a move that was denounced by the international community. With bridges cut and a drone blitz on shipping, Russian-occupied Crimea is reeling from a relentless Ukrainian campaign of targeted drone strikes. Vladimir Putin has said the peninsula he seized. Following the dissolution of the Soviet Union, the Republic of Crimea was formed in 1992, although the republic was abolished in 1995, with the Autonomous Republic of Crimea established firmly under Ukrainian authority and Sevastopol being administered as a city with special status. Stay on top of Crimea latest developments on the ground with Al Jazeera’s fact-based news, exclusive video footage, photos and updated maps. It has been 11 years since Russia took control of Crimea but Moscow's invasion of Ukraine has put the peninsula back in the global spotlight. Here's what you need to know. CRIMEA HAS been a bridgehead for Russia since it seized the territory from Ukraine in 2014. But the peninsula is now looking vulnerable. Ukraine has stepped up its drone campaign, targeting. The Ukrainian military confirmed overnight strikes on a Chornomornaftogaz facility and a drone relay station in Crimea, alongside logistical targets in the Donetsk and Luhansk regions. After Ukrainian independence in 1991, most of the peninsula was reorganised as the Autonomous Republic of Crimea. The Soviet fleet in Crimea was in contention, but a 1997 treaty allowed Russia to continue basing its fleet in Sevastopol.