"When the power of love overcomes the love of power the world will know peace."
Jimi Hendrix

History generally is the story of some countries trying to get power through violence at the expense of some other group. 

World war 1 was caused by Serbia wanting independence and Austria-Hungary not wanting them to have independence. 

The war in Ukraine is caused by Ukraine wanting to be a free country that can join the European Union and Russia not wanting Ukraine to be free.

China doesn't want Taiwan to be free and may go to war with Taiwan and the United States to conquer Taiwan.

Iran wants to take over the middle East including Israel.  Islam wants to take over the world.