I'll fix the analogy a bit for you.
Imagine Japan said to some Norwegeins - the UK is your Holy land. Please go there, it's your new home. Japan didn't ask UK if this was ok, just presumed UK would be happy to share with the Norwegeins. So the Norwegeins came over and gradually took over all the land, stole the houses of UK residents. Took over town by town, village by village. The Norwegeins shot and killed many thousands of UK citizens and traumatised them. They pushed the UK residents into Devon and then built a wall around Devon. Devon is now the most densely populated country in the world because the population of UK has been squeezed into it. A few UK citizens also were pushed into Birmingham and a wall and checkpoints were built around it.
Now the residents of Birmingham and Devon are not allowed to leave. They can't drive to London anymore, only Norwegeins are allowed in London. Only Norwegeins are allowed on the motorways. Only Norwegians can vote on what happens in Wales, London, Cardiff,.Scotland. only Norwegians are allowed in the UK. UK citizens must remain in either Birmingham or Devon and they can't travel between the two or leave or ever visit their capital city or any important religious places in the UK they used to go.
Norwegians now control the water and electric supplies to Devon. They build new houses around and inside Birmingham.
When Birmingham and Devon people protest, they are shot. Most people in Devon and Birmingham have seen at least one family member murdered by the Norwegians. They all hate the Norwegians for stealing their country and killing their friends and family.
The Norwegeins decide to fund an organisation called Hummus. They don't like them but they want Birmingham and Devon to be separated and not feel as one united UK anymore. They want infighting within Devon and Birmingham too. So they give loads of money to Hummus.
Members of hummus happily take money from the Norwegians who have taken over their land. They want revenge against the Norwegians for stealing their country and killing their friends and family.
Some members of hummus, as a result of sustained trauma inflicted by the Norwegians, have turned evil. They break out of Devon and launch an attack in Bristol. They savagely and horrifically kill innocent Norwegians that were partying in their homes in Devon (the homes that used to belong to UK citizens).
The Norwegians are angry and scared by this horrific act, so they make sure the walls around Devon are completely secure, then they bomb the shit out of the place. They kill thousands of children, destroy all the hospitals, schools and traumatise the people trapped in Devon every day for a year. They induce famine, they cut off electricity when they like launching Devon into darkenss. They tell the children to move to the north, then bomb it. They tell the inform to move south, then bomb them. They drive tanks over dead and alive UK citizens in devon. The blow small children into thousands of pieces. The Norwegians are angry so they start attacking the people in Bingham too, even though noone in Birmingham was involved in the hummus attack.
Then the Norwegian leader of what was once the UK (now called norway-land) decides he will also invade Ireland. He wants to get rid of UK citizens from Devon completely and from Birmingham. He wants the whole UK to be called 'norway-land' and he wants Ireland too. He'd already stared building Norwegian homes in Ireland, but now he's decided to just start killing people there...