By Mukesh 
Hezbollah has launched a new weapon against northern Israel in the latest round of fighting: small drones controlled with fibre-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 potentially lethal.
Many drones are susceptible to electronic jamming by air defences. Jamming can cause a drone to crash or return to its point of origin.