I am a great believer in the saying, "If you want peace, prepare...

I am a great believer in the saying, "If you want peace, prepare for war." Even a cursory study of history would convince you that war is the result of weakness and failure to prepare for defence. If you cannot tell good from evil in the two main global conflicts, you are a victim of a deficient education system.
Where I come from, the slaughter of 12 hundred innocent civilians in cold blood is pure evil. The capture of 250 innocents and their cruel imprisonment and casual slaughter is sheer evil. You mention the damage to hospitals in the Israel response. This is entirely the result of Hamas building their military bases under and within hospitals and schools and using their civilian population as human shields. Don't try to blame Israel for the result of Hamas actions.
As for Ukraine, anyone who believes that they started the war is deluded. Putin is pure evil and his own people are the main victims. There will be no peace till both these evils are completely defeated.