Missile attack

Of the 23 injured, 21 are in hospital and three are in a serious condition.

Two boys aged three and six were also among the wounded, governor Serhiy Lysak said.

Russian strikes on Ukraine have intensified in recent weeks ahead of an expected Ukrainian counteroffensive.

Mr Zelensky posted a video of the damaged clinic that showed firefighters at the scene and smoke billowing from the building.

"Russian terrorists once again confirm their status of fighters against everything humane and honest," he said.

"You're thinking, 'Oh my gosh, are we going to die? Is it really a missile (headed) our way, or is it just a test?'" the 24-year-old told CNN. "We really didn't know."

Minutes before, she'd received an ominous alert on her phone.

"BALLISTIC MISSILE THREAT INBOUND TO HAWAII. SEEK IMMEDIATE SHELTER. THIS IS NOT A DRILL."

Azbell, her boyfriend and hundreds of other hotel guests were "herded like cows" into the basement by staff. "People are crying and people obviously were super scared," she said.