Shortly after Russian President Vladimir Putin authorised a "special military operation" in the conflict-hit Donbas region in eastern Ukraine, a series of explosions hit Ukraine`s largest airport Boryspil and several military objects in eastern and southern regions of the country on Thursday, according to Interfax-Ukraine news agency.

The Ukrainian Infrastructure Ministry said it was evacuating passengers and staff from Boryspil, reports Xinhua news agency citing the media outlets.