Which invasion are you talking about--the one in 2014 or 2022?
If you want a comprehensive chronology of how we got into this mess, check out my link in post #13. You need to get better informed instead of relying on the Biden propaganda machine.
Biden is compromised on Ukraine. Why do you think Trump's first impeachment over Ukraine came about? Ukraine was one of the most corrupt countries in Europe before the war. It has only become worse under Zelensky who has jailed his opponents, postponed the election, and committed other violations of civil liberties. You don't become President of Ukraine without being corrupt.
1. Your post #13 is your opinion and in it you cut and paste the “facts” that fit your narrative, which is by a long shot not all the facts, and in that particularly all the facts about what Putin has and has not done.
2. Biden is the last person I rely on for anything. So quit trying to imply that because I disagree with you that I get my information or opinions from him.
3. Biden could have convinced Putin to not invade Ukraine, with just one warning, that that invasion would insure exactly what you claim Putin did not want - that in time Ukraine would definitely ask and be accepted into NATO. But Biden is no Trump and could not muster the strength to give Putin that warning.
4. We have a 2,000 mile with Canada and that is not a security question because we and Canada do not have such concerns with each other. Putin has security concerns with such a border due to his own actions insuring those on the other side of that border have concerns about him.