Zürich trams donated to Ukraine
https://www.railwaygazette.com/light-rail-and-tram/zurich-trams-donated-to-ukraine/63785.article
It's easier to donate LRT than to donate trains on heavy rails.
But, it would be difficult for train operators out of Ukraine to donate trains on heavy rails, because it's time consuming to check if complicated signal system is the same as the system in Ukraine. And also, there are fewer methods to transport rolling stocks on heavy rails.
