BEIRUT, June 10 (Reuters) - Israeli airstrikes in southern Lebanon killed at least 13 people on Wednesday, Lebanese security sources said, as Israel pressed its campaign against Hezbollah and the Iran-backed group claimed fresh attacks against Israeli forces in the south. The dead included nine people killed in the village of Dayr Debba, 8 km (5 miles) east of the city of Tyre, the state-run National News Agency reported. Reuters footage showed vehicles ablaze in the southern city of Sidon after an Israeli airstrike.