New Delhi, May 2 -- Hezbollah has launched a new weapon against northern Israel in the latest round of fighting: small drones controlled with fiber-optic cables the width of dental floss that avoid electronic detection.

These drones - used widely in the war in Ukraine - are small, hard to track and lethal. Drones killed an Israeli soldier in southern Lebanon and injured at least a dozen others in northern Israel on Thursday, two seriously. A soldier and defense contractor were killed in Lebanon earlier this week.

Many drones are susceptible to electronic jamming by air defenses. Jamming can cause a drone to crash or return to its point of origin.

Fiber-optic drones are not piloted via GPS signals or radio control. They have a thin cabl...