Lenticular lenses are cheap and hide objects optically and in infrared - 180 degree and top down. Ukraine should consider using them at night

Russian IR sensors and air support will not be able to see soldiers at night, allowing close ups for sabotage etc.

Meanwhile Russian convoy would be visible in IR on any phone camera with the right filter.

Javelins have a range of 2.5 km, RPGs 200 to 500 m. Nightly raids of a couple hundred soldiers on artillery, AA, fuel, hiding behind tanks, should end the siege fast

No diesel means no tanks