Pro-Russian Rebels Attack Key Port, Ukraine Says At Least 30 Dead

(Reuters) - Pro-Russian rebels launched an offensive against the strategic port of Mariupol in eastern Ukraine on Saturday, prompting the European Union's foreign policy chief to warn of a further "grave deterioration" in EU-Russian relations. Mariupol's city administration said the rebels had killed at least 30 people and injured 83 others in the offensive by firing rockets from long-range GRAD missile systems.