Russia - threadbanned users in OP

Well kinda J. Unless we're talking about neutron bombs which are pretty much designed to render an area uninhabitable while leaving much of the surrounding area intact(yeah, some fcukwits came up with that, for no good reason save for fcukwittery) nuclear bombs aren't as 'bad' as something like Chernobyl going rogue. Yes you have major initial spikes in radiation, but it dies off pretty quickly, because the reaction itself 'burns' off most of the radioactive material. Before the ban on atmospheric testing we were setting them off on the regular. Reactors going rogue add much more into the equation. After all Nagasaki and Hiroshima are large thriving urban centres today and were from a few years after rebuilding and the bombs. Yes there were effects from those detonations, but Fukushima is worse in many ways and a lot more long lasting. Chernobyl won't be a thriving urban centre any time soon. Like for centuries. If it had gotten into the groundwater and blew up even more(as they feared) most of Belarus and much of Ukraine would be an exclusion zone. And those effects would have travelled farther on the winds and caused cancers and other nasties, screwing up a fair bit of Europe.

All politics West and East is corrupt thats one thing for sure and I trust neither but I am baffled how weak the West and NATO really are when it involves Russia,

A large majority of the world and the 'West and NATO' have already taken them on with some of the most punitive sanctions in world history and did so in a matter of days, hours in some cases. And are supplying Ukraine with weapons and intel and widespread humanitarian support. Now(and no this isn't the usual whataboutery, it's to illustrate the differences) compare and contrast the level of support or sanction when Iraq, Georgia, Chechnya or Afghanistan were invaded. Hell, look to Yemen today and for the last, what five years? It's being pummelled and nary a word on Western telly, or the interwebs. IIRC 20,000 dead and countless more displaced. If I were darker of skin, I'd be forgiven for thinking the 'World" only seems to wake up when White people are killing and dying in Europe. More than wake up, they as Americans might say "lose their shít" and with remarkable speed too.

its like they feel like they can't take on this Superpower in the fear they will lose.

Oh for God's sake. It's not a fear of losing or winning. It's a fear of massive escalation getting way out of hand and world changing, even extinction level event if all the buttons were pushed. Losing or winning could kick off the same result.

People talking about starting WW3 I think this has already started and history will repeat itself again.

Actually I would say 911 was the start of WW3, but it's somewhat simmered down of late. If anything this is WW4. Though I don't believe it is. Yet. IMHO it's a phoney war. A Cuban missle crisis on our doorstep and a return to the proxy wars between the US and the USSR in the 20th century.

There will soon be genocide in Ukraine and will the world watch as it happens? Are you OK if there is genocide committed in Ukraine and nobody intervenes?

Please, please look up the word 'genocide'. It isn't what you appear to think it means. Genocide is not happening in Russia's misadventure in Ukraine.

There has been the sniff of it in the Donbas alright. Where it's kinda like Northern Ireland in the Troubles only on steroids and methamphetamines. Where(to continue the comparison) the Irish and the British were supporting and supplying their 'side'. To carry it further Donbas is more 'Loyalist'(to Russia) than 'Nationalist'(to Ukraine). To labour the comparison even further, the war in Ukraine today would be like the British invading Ulster in the Troubles to "protect their own' as their claimed aim, but who then went to invade further and seek to take Dublin, Cork, Galway, get rid of the standing Dail unless they were 'Loyalist' in tendencies and put in a London controlled puppet government. And the World lost their shít, and rightfully so, but didn't dig too deep into the whys, or excuses if you're Putin. Like barstool Irish-Americans in the 1970's waxing lyrical and ignorantly on the Republican struggle 'back home'. "Top o' the mornin' to ya, laddy boy. Have some Lucky Charms and a fiver for de' cause". This has been brewing for a long while and it's a lot more complex than flag avatars and blind rhetoric on all sides.

What do the UN actually do if they can't intervene because of political agendas?

Involve themselves, compromise, sanction, support, to talk and try to de-escalate and peacekeep if and when they can. What they were designed to do.