“Land Swap” di Putin è davvero una presa per la cintura della fortezza ucraina – vuole che Trump si assicuri per lui ciò che l’esercito russo non può

From article:

Putin wants Trump to force Ukraine to abandon its strategically critical “fortress belt”, a 30-mile (50km) line of fortifications that have been built with a massive investment over the past ten years.

It would not only take Russia years to take the fortress belt but would be hugely costly in terms of casualties and resources. The idea that Ukraine could simply move its front line back and rebuild its defences is not viable as it would be enormously expensive and take a great deal of time. 

Once in Russian hands the infrastructure of the fortress belt could in effect be turned against Ukraine. 

right, I have no idea why publications like the guardian, bbc, etc gloss over this. it’s probably the most important piece of information about the negotiations given that russia has a habit of breaking its agreements and continuing the invasion anyway: **they’re asking Ukraine to give up all their defences**