Ukraine-Russia war: Situation becoming increasingly desperate as humanitarian corridor fails for fourth consecutive day

Ukraine President Volodymyr Zelensky has borrowed and adapted the famous words of former British Prime Minister Winston Churchill, saying they will fight in the forests, fields and on the shores.

Many Ukrainian civilians desperate to escape the bombing have been trapped because humanitarian corridors designed to help them have failed again.

A Polish plan to provide fighter jets to Ukraine has been dismissed by the US because it was seen as "too provocative" to Russian President Vladimir Putin.

But it's certainly not all going Russia's way, as Ukraine claims to have killed 11,000 Russian troops.

However, the humanitarian situation is getting increasingly desperate. While thousands were able to escape the town of Irpin, Ukraine while they were protected by a fragile ceasefire, the good news didn't last long. 

Only the first of many planned convoys made it out before the shelling started again.

The humanitarian corridor in Mariupol, Ukraine failed for the fourth consecutive day after it was thwarted again by Russians.

"In the outskirts of the city, everywhere has been mined," one police officer said.

Desperation is beginning to rule and one local supermarket was looted. Being trapped is also turning people against each other.

The chain of despair begins with Russian attack helicopters preparing to swarm the night. On the receiving end is a residential neighbourhood in the town of Sumy.

Twenty-one civilians lost their lives there, including two children.

"I am Russian but I hate Russia. I hate, hate, hate them. 

"They are killers," one man says.

It's astonishing how quickly war creates a grotesque new normal, where a lone body can lie uncollected on the side of an empty road and leaves the living to pick through the landscape of their past.

"We have nothing, no food, no electricity, no medicine. We have nothing," one woman says. 

Despite the suffering of Ukrainian women, Putin made a special address to mark International Women's Day but paid tribute only to the Russian partners of the men he'd sent to war. 

"I understand how you worry about your loved ones," he says.

Russian tanks continue to roll through Ukraine with greater difficulty than anyone expected and much greater losses - but still, they press onward.

So in a historic address to the UK House of Commons, Zelensky invoked Churchill, another wartime hero, and pleaded for more support.

"We will not give up. We will fight to the end, at sea, in the air," Zelensky says. "We will continue fighting for our land whatever the cost.

"We will fight in the forest, in the fields, on the shores, in the streets. We will fight on the banks of the rivers and we are looking for your help." 

But it appears it won't be coming in the form of an offer of Polish MiG fighter jets because the US says it would just inflame Putin further.

So Russian airstrikes will continue to create deserted neighbourhoods full of show homes of horror. 

"I'm so sad about the people and about the city, the children," one woman says.

She speaks for just about everyone in Ukraine about a war that's left the young to watch their country be destroyed before their very eyes.