Different cells have different jobs. what job do whote blood cells have?

Red blood cells are red blood cells, also called erythrocytes. These cells give the blood color. Their task is to transport oxygen and carbon dioxide through the hemoglobin molecule they carry

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey