Lester Pearson was sent by the United Natiosn to keep peace in an area known as Suez. The Suez crisis involed the British, the French, and the Egyptians. The British and the French built a trench connecting the Mediterranean Sea and the Red Sea. After it was in use, the Egyptians claimed it was their's, as it was in their land. This started a war, with the British, French, and the Israeli's against Egypt. Lester Pearson proposed to send soldiers to the trench, to keep peace.