Russia Ukraine war, page-227203

NATO's Eastward expansion is what led to the creation and escalation of the Russia-Ukraine conflict.
NATO is geopolitical tool that serves predominantly US interests.
NATO owes it's creation largely to US/UK intelligence agencies, that employed a wide network of criminal groups, terrorist, ultra-far-right organisations in order to manipulate the European political landscape. Which basically boiled down to reducing the influence of communist and socialist parties and ideas..

Their favourite method to achieve that objective was terrorism. Explosions, assassinations, kidnappings, torture. Something you would expact from totalitarian regimes, but certainly not from a beacon of freedom and democracy.

Some time after NATO was formed, those groups were transferred under direct NATO jurisdiction.

Operation Gladio.