Is USA going to poke his nose in every fight in Muslim Household, what do you think you are doing are you a world watchdog.
You are doing all this to retain the supremecy in the world.
Nobody needs war except USA.
USA and Its allies have a much more bigger problem back home with corrupt police captains, goons, Mafia, Druglords a shattered economic situation to address save your citizens first in your country. Remember charity begins at home.
Don't mediate between two brothers, they will fight and unite and bring peace it is nature's law.