Let's get some facts straight.
According to the Budapest Memorandum, the U.S., the UK and Russia have agreed: (1) to respect Belarusian, Kazakh and Ukrainian independence and sovereignty in the existing borders [in exchange for them giving up nuclear weapons], (2) refrain from the threat or the use of force against Belarus, Kazakhstan or Ukraine, (3-6) etc. See full document for details. Or simply look up "Budapest Memorandum" in Wikipedia.
So your statement that the US, UK and Russia "guaranteed the country's security" is misleading at least. Which makes your later insinuation about the inaction of the US or its lack of integrity a moot point. There is NO explicit document or agreement where the US has promised to defend Ukraine using military means (in the same way as, say, Article 5 of NATO).
The only signatory to the Budapest Memorandum which has breached it in a major way is Russia - first by annexing Crimea in 2014, then in 2018 by firing on Ukrainian ships in the Strait of Kerch, and finally by staging a full blown invasion in 2022.
So if you have some unkind words to say about this conflict, address them to Russia who started this aggression in the first place. If, on the other hand, you are just looking for an opportunity to twist a couple of facts and take a cheap shot at your own country's government, just say so, it won't be the first time.
Yes, let's get the facts straight! The Ukrainian (and Russian) translation would be our word "guarantee". I'm sure you can fact-check that ...
Now, I have donated to the Ukrainian refugee charity. What have you done to help?
Where should we send the trophy?
You're damn right I'm criticizing our current administration! Statistically ZERO COVID Deaths in our country in Americans 17 years and younger, with 46,000 reported adverse reactions to the vaccines, including death. In studies COVID deaths in that age group in the unvaccinated were no higher than in the vaccinated group. Yet our military is discharging recruits who refuse the jab.
Our military: Chairman of The Joint Chiefs of Staff Milley predicted in February a Russian invasion of Ukraine could take Kyiv in "just 72 hours". He also predicted Ukraine would likely lose 15,000 troops compared to Russia's 4,000. Is he too busy dealing with his whiteness to get real intelligence?
Inflation: It's out of control. Why?
Crime: It's out of control. Why?
While we're discharging young men from the service for refusing that jab, we're allowing thousands of illegals to enter the country every day, knowing literally nothing about their health or background. And giving them cash, transportation, and cell phones!
My wife works literally every day with people who had to purchase very limited health coverage - which legally excludes pre-existing conditions -
because they couldn't afford the new Obamacare premiums. What are YOU doing to meet that need?
(Oh, and you did keep your doctor and save $2,000 a year on insurance premiums, right?)
If you're not upset by the current state of affairs in this country, you either (1) have your head in the sand, (2) don't give a rat's a-- about anyone but yourself, or (3) simply look the other way rather than acknowledge the failings of your political heroes.