That way if it someone they have never met they can use that in their defense and if they do know this person and they know that person is holding a grudge or purposely trying to ruin their reputation the defense can object
Expansion of the USSR--Truman believed in a policy of containment in regards to the USSR and communist expansion.
This speech indicates the desire by Truman to create a free world where elections could occur. The USSR and the leadership of Stalin was seen as dangerous by the United States and in particular how communism was spreading through Europe. Truman made it clear that the US was willing to support countries in keeping or creating a free state.