NATO’s policy of expansion in the East over decades in the face of explicit Russian protests and warnings of potentially dire consequences, eventually drove international tensions up to the point where a Russian military intervention inside Ukraine’s borders was unavoidable.
If you’re going to blame Putin, then you must also blame NATO and its Sec. Gen. Herr Stoltenberg; the UK and its then-PM Mr BJ; the EU and its Madame Ursula; the USA and its varying presidents including Obama and Biden; plus all the non-governmental actors of the World Economic Forum, such as Bill Gates, Klaus Schwab, George Soros et.al., as well as the multitude of bought-and-paid-for Main Stream Media talking (but not thinking) heads (including those of state-owned Norwegian propaganda outlet NRK).