2. Islam and war
Islam sets down clear guidelines as to when war is ethically right, and clear guidelines as to how such a war should be conducted.
In brief, war is permitted:
in self defence
when other nations have attacked an Islamic state
if another state is oppressing its own Muslims
War should be conducted:
in a disciplined way
so as to avoid injuring non-combatants
with the minimum necessary force
without anger
with humane treatment towards prisoners of war
Muslims must only wage war according to the principles of Allah's justice.

12. Islam allows war in self-defence (Qur'an 22:39), to defend Islam (rather than to spread it), to protect those who have been removed from their homes by force because they are Muslims (Qur'an 22:40), and to protect the innocent who are being oppressed (Qur'an 4:75).

13. Islam is in favour of peace and against violence
Islam is in favour of peace and against violence. Murdering the innocent leads to punishment in Hell
See Qur'an, Surah 5:verse 32

14. Allah teaches in the Quran that when anyone from the enemy requests security then not only should it be given to him but he should be taken to a place of security:
“And if any of the polytheists seeks protection from you, grant him protection till he hears the Word of Allah; then do convey him to his place of security; that is because they are a people who do not know.”
This verse means that if one of the disbelievers, against whom you were commanded to fight, comes to you and asks for security, do relieve him to listen to the Word of Allah and to contemplate over it.
Then the verse continues saying:
“…then do convey him to his place of security...”
if he did not embrace Islam, you should not kill him, but you should take him to a place of security of life and wealth