No one in Europe wants to conquer any part of Russia. Everyone wants to do business there.
Russia wants to regain control over former Soviet territories. Putin stated it indirectly as early as 2006. Ukraine asked for NATO protection after Russia took Abkhazia and South Ossetia in 2008.
It is not about NATO; it is about Russia controlling a reach country. It is Ukraine today, some other country tomorrow.
Martin Knapp has M.A in International Political Economy but no knowledge of east European affairs.
Seeing more articles like his on Medium, I recently posted five articles explaining different aspects of the situation in Ukraine.
My apologies to Martin Knapp; he can write and publish on Medium whatever he pleases. Sadly, Medium does not suggest my articles to Mr. Knapp. For my membership fee of $4.17 per month, I expect not to be annoyed by the recommendation of articles like this one by Mr. Knapp.