Sivash, a series of bays off the coast of this region, is a producer of brines, and the Tonka of Arabat is a sandspit off this region's coast. Its namesake mountains are home to the highest point here on Mount Roman-Kosh. Cities on its coast include Eupatoria and Theodosia, and it was inhabited by Tatars with their capital at Bakhchisaray, which led to it being a part of the Tatar A.S.S.R. Its current headquarters are at Simferopol, and a city here is Kerch, which gives its name to the straight 
Sivash, a series of bays off the coast of this region, is a producer of brines, and the Tonka of Arabat is a sandspit off this region's coast. Its namesake mountains are home to the highest point here on Mount Roman-Kosh. Cities on its coast include Eupatoria and Theodosia, and it was inhabited by Tatars with their capital at Bakhchisaray, which led to it being a part of the Tatar A.S.S.R. Its current headquarters are at Simferopol, and a city here is Kerch, which gives its name to the straight connecting the Black Sea to the Sea of Azov. For 10 points, name this peninsula in the Ukraine that was home to a war that pitted the Russians against the British and French.
Sivash, a series of bays off the coast of this region, is a producer of brines, and the Tonka of Arabat is a sandspit off this region's coast.
Crimean peninsula [or Krymsky Poluostrov; or Crimea]