How Israel Palestine war could affect the worl and Shake the world economy?

So in response to this, Israel declared a war for the first time since 1973!!
This is yet another war that could again disrupt the world economy like the Russia ukraine war because it involves some of the most powerful players in the world like Saudi arabia, iran and even the United States!! And just like the Russia ukraine war iF this escalates it could have some serious consequences for the economy of India AND THE WORLD IITSELF !! So as students of business let dig deep and understand,
What is Hamas and why are they attacking Israel?
What is the role of iran and saudi arabia in this israel palestine conflict?
How can this war esacale to disrupt the world economy?