I guess it will be between Egypt and Iran. This from PressTV web site: "The aid consists of food and medical supplies, which will be transported into Gaza via the Rafah border in Egypt before the week is through," the country's Red Crescent Director Abdolraoof Adibzadeh said. The Rafah border crossing is the only escape route from Gaza that does not lead to Israel.
2 Yemeni Red Cross workers killed by gunmen (AP)
from the article: Report: Two Iranian ships to sail to Gaza