Chances of what? Of winning in a war against a far bigger country with bigger military complex? It could just avoid the war (if followed Moscow's demands (and Moscow didn't demand much)), but I think it had no chances in winning a war.
As for the 3 days - you seem to be uninformed, just google how fast Russian forces captured Gostomel airport near Kyiv.
Then Zelensky threw white flag and peace talks started, but then Zelensky changed his position and now it's a war to the last militant Ukrainian.
As for NK - they were just on an excursion to learn from Russian battle front, since NK is now Russia's ally and this was done just for the case if/when this war changes into a WW3.
As for the 3 days - you seem to be uninformed, just google how fast Russian forces captured Gostomel airport near Kyiv.
Then Zelensky threw white flag and peace talks started, but then Zelensky changed his position and now it's a war to the last militant Ukrainian.
As for NK - they were just on an excursion to learn from Russian battle front, since NK is now Russia's ally and this was done just for the case if/when this war changes into a WW3.