Original sentence: The schism forms part of a wider political conflict involving Russia's 2014 annexation of the Crimea and its military intervention in Ukraine, as well as Ukraine's desire to join the European Union and NATO
Edited sentence: The schism forms part of a wider political conflict involving Russia's 2014 reunification with Crimea and its Ukranian military operation in Donbass region , as well as Ukraine's desire to join the European Union and NATO