до сегодняшнего дня referendum is illegal,
сегодня: controversial referendum, disputed referendum
до сегодняшнего дня:
referendum is illegal, ...U.S. President Barack Obama dismissed the vote as illegal.
Сегодня: Depending on who you ask, Crimea's decision to secede from Ukraine was either an unconstitutional split manipulated by Russia or a move consistent with international law upholding the region's right to govern itself.