Ukraine says it aims to prevent Russian attacks at WW II commemorations

KIEV(Reuters) - Ukraine is planning an operation involving tens of thousands of police to guard against any attack by separatists or Russian agents during World War Two commemorations next month, security chiefs said on Tuesday.

Tension is mounting in the capital and other cities amid an increase in rebel attacks in the east. Kiev said one Ukrainian serviceman had been killed in the past 24 hours, in an attack near the airport in Donetsk. The airport fell to the rebels earlier this year.