One of uncleanness that Islam does avoid

One of uncleanness that Islam does avoid
Blood
And bloodshed and murder in Islam because Islam is a great sin known
And the specific reasons for the war in Islam that should be looked at to date
Islam is not war with someone for no reason after reason and started the war
Whatever the reason dictates that religion dictates and what the religion is only reasonable verdict

The Quran says, listen to the command of the Prophet and Imam Be
Then began to kill anyone without a reason, and wreaked havoc and killed civilians without Mntzptq
Not a Muslim