Not before first weakening and fracturing NATO.
Brexit split England off the EU (https://en.wikipedia.org/wiki/Russian_interference_in_the_20...). Trump expressed strong doubts about staying in NATO (https://www.nytimes.com/2019/01/14/us/politics/nato-presiden...) and was at the very least sympathetic towards Putin at times (https://www.bbc.com/news/world-europe-44852812). These are opening salvos.