You Have Been Invited [Letter]

Navigating through the village came a lonesome raven, a letter firmly grasped by its claws yet miraculously not tearing the paper. Its purpose was singular as it homed in on the most prominent building in the village - The Raikage Chambers. Once it was close enough to an open window the bird swooped in, riding atop a gust as it circled the interior of the chamber once before landing down on the edge of the desk, docile so that the message could be received from its lightly curled talons. Sealing the letter was the official symbol of Kirigakure No Sato pressed into red wax. Inside the following could be read.

"Greetings, Raikage.

I write to inform you that the tradition of the Gokage Summit is being renewed once more which will involve the leaders of every recognised major village so that we can discuss prominent issues and establish unity. This meeting will be held in two weeks (08/08/NINJA YEAR) in the Land of Iron so that the land is neutral for all parties.

You may bring two bodyguards with you to ensure your safety on this journey, any more will be considered a threat to all parties and subsequently handled with impunity.

I look forward to meeting you.

Regards,

Xyxer Gyojin
Mizukage"

Given that it was unobstructed and the leader didn't want to send their own letter, the raven would beat its wings once, lifting from the table before making its way out of the hopefully still open window, promptly returning to Kirigakure.

Response here