By Yelena Mandenberg Flights radar maps show empty air space over Iran as the nation suspended flights over several cities, including the central city of Isfahan, where explosions were heard near the airport. A senior US official told ABC News that Israel had begun their strike against Iran in retaliation for the 300 missiles that Iran launched over Israel last week. A Fox News report cited a ‘well-placed military official’ as saying the strike ‘was limited.’ Iran’s Fars news agency earlier reported explosions were heard near its airport, but “the cause of these sounds is still unknown, and in…