World leaders have signed a declaration, pledging aid to the nations affected by last month's tsunami. The declaration includes a promise to set up an early warning system for the Indian Ocean similar to that in the Pacific Ocean.
It is hoped this would save lives should a similar event happen again, by giving people on the coastlines time to clear the area.
The declaration comes at the conclusion of the aid conference in Jakarta, Indonesia, which was held this week. It urges the UN to mobilise international aid efforts.