trip wire

Then junior year comes along and strews the floor with trip wires that forces entire families to navigate them all in a fog of perpetual exhaustion and hastily prepared and erratically timed meals.

Among the devices they've hidden are large cylindrical anti-tank mines; smaller anti-personnel ones; bounding mines - which pop out of the ground and spread shrapnel over a wide area - and grenades fitted to a trip wire.

But it is the vast array of mines, trip wires, booby traps and improvised explosive devices that has Ukrainian forces bogged down only a few miles from where they started.

Ukrainian teams have been deployed to demine liberated areas but specialists believe there are still thousands of Russian mines, trip wires and booby traps hidden across the country.

The hand-grenade rigged to a trip wire had been found earlier by colleagues before soldiers returned to detonate it safely, as it was too dangerous to defuse.