Russia vs Ukraine war that’s happening

What is issue between Ukraine and Russia?
Throughout 2021 and 2022, Russian military build-up on the border of Ukraine has escalated tensions between the two countries and strained bilateral relations, with the United States sending a strong message that invasion would be met with dire consequences for Russia’s economy. The two countries had some wrong agreement with both and Putin didn’t agree and sent to bomb Ukraine with nuclear bombs.
The issue now is people in the Ukraine are getting bombed and know one cares because children are left with parents to suffer in the streets with nothing but dust surrounding them and fear. They are also using tanks other than bombs to destroy the country. The army of Russia didn’t care and Boris Johnson urges to push this war to a halt before the attack spreads. He announces further aid for Ukraine and his words against Putin is “Putin must fail”. Parts of Ukraine are guarded by Russian soldiers one place called Crimea is annexed and guarded.
It is now clear Russia is seeking to seize the big cities and overthrow Ukraine’s democratically elected government. President Zelensky said he had been warned “the enemy has designated me as target number one his family is target number two”.
This war on the country started 24th February 2022 it was the attack on Ukraine. Soldiers blocked certain roads and blew a lot of the civilisation even a care home in Kyiv. And flats and homes a bomb nearly hit someone in a moving vehicle as well.