== Twin cities? == 

 After the Russian occupation of the Crimea, what happens in the relationship between the twin cities of Sevastopol in Russia (Moscow was not signed until March 18, 2014)? 
 *  Moscow (March 18, 2014) 
 *  Volgograd (November 19, 2013) 
 *  Saint Petersburg (2000) 
 *  Petropavlovsk-Kamchatsky (2009) 
 *  Belgorod