Israel's escalating shadow war with Iran: drone interceptions and retaliations.

Israel's military source said that Iran appears to have launched a drone that was brought down over Israeli airspace this week. The drone was downed using "electronic warfare." A drone flying over the Gaza Strip was also shot down on Monday, but it did not represent a threat. Israel has carried out scores of airstrikes in Syria, most of which have been aimed at Iranian targets or suspected arms shipments to Hezbollah and other Iran-backed groups that have sent troops to back Assad. Tensions in northern Israel have escalated after the series of airstrikes, a terror attack, and threats between Israeli officials and Iran.