“So why then did Ukraine talk about wanting to join NATO in 2022” Not clear by what you mean by “That happened in 2015.”
What is clear is that earlier than these dates both US and Russia had signed agreements to protect Ukraine as part of a deal returning all nukes in Ukraine to Russia. By 2015 Russia/Putin had already occupied Crimea and were working on occupying Eastern Ukraine. Why wouldn’t Ukraine ask to join NAtO in 2022 when RUssia had already or was about to put a massive army into Ukraine in additon to what it had put into Crimea and was doing militarily in Eastern Ukraine starting in 2014?
It seems by these facts it was Russia/Putin that broke the most important agreement and defecated on their own word. As to who blew up Nordstream, I think a good argument can be made that Russia blew it up since it could not get a critical repair part from Canada anyway. By blowing it up Putin was able to convince some easily duped people that someone else had done something bad to them.
February 2015 that he would not send lethal aid to Ukraine. According to the U.S. Ambassador to Germany, Peter Wittig, Obama agreed with Merkel on the need “to give some space for those diplomatic, political efforts that were under way.”
That same month, Obama’s commitment gave Merkel the momentum to finalize the Minsk II Accords, a pact between Kyiv and Russian-backed Ukrainian rebels.