What are lipids and where are they plz me out of this

I know lipids are fats, I am not sure where they are found.

They are found in protiens

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