Alva Review-Courier -

KYIV, Ukraine (AP) — Ukraine's air force said Wednesday that nine Russian warplanes were destroyed in a deadly string of explosions at an air base in Crimea that appeared to be the result of a Ukrainian attack, which would represent a significant escalation in the war.

Russia denied any aircraft were damaged in Tuesday's blasts — or that any attack took place. But satellite photos clearly showed at least seven fighter planes at the base had been blown up and others probably damaged.

Ukrainian officials stopped short of publicly claiming responsibility for the explosions, while mocking Russia's...