The act of pointing out a proposition as if it were true, i.e., as if it is consistent with belief.
Insisting that a proposition contains an answer to an inference if it is false is a kind of statement.
Charles Sanders Peirce goes further by suggesting that assertion is “exposing the fact that a person who objects to himself may go so far as to be called a liar if the proposition he maintains is not true.“(SS 1977, 34)