The Russian-backed eastern Ukrainian rebel region of Luhansk said on Sunday it may hold a referendum on joining Russia, drawing a warning from Kyiv that any such vote would have no legal basis and trigger a stronger international response. Three days before ordering the Feb 24 invasion of Ukraine, President Vladimir Putin recognised the Ukrainian rebel regions of Luhansk and Donetsk as independent states, though the rest of the world considers them part of Ukraine.
Ukraine, which says it is fighting for its existence against what it casts as an imperial-style land grab by Russia, has repeatedly said it will never