A Russian ballistic missile attack has killed at least 21 people and injured more than 75 in the Black Sea city of Odesa, Ukrainian officials have said. President Volodymyr Zelenskiy said Russia would receive a ''fair response'' from Ukrainian forces for what he said was a ''vile'' strike on a city that has been attacked by Russian drones or missiles almost every day this month. The attack on civilian infrastructure was Russia’s deadliest in weeks after Moscow recently increased its strikes on the port city.