bloviate
bloviate (blō"vi*āt) , intransitive verb
To orate pompously; -- used especially of politicians and news commentators. — Frank Rich (N. Y. Times Jan. 6, 1999, p. A23)
“We've had almost three weeks of lawyers bloviating about what the facts in the case are,” Mr. Rogan said. “Wouldn't it be easier to bring the witnesses?”