Which countries are secretly helping Ukraine?

The Ukraine-Russia war is getting intensified day by day. Meanwhile, Russian President Vladimir Putin said Ukraine could lose its statehood if it "continues to behave like this". At the same time, Putin has said that Ukraine needs to have a no-fly zone, but this is impossible to do and Putin has warned countries supporting Ukraine. While there are some of the countries which are assisting Ukraine from behind. What do experts have to say over this? Watch this video.