WASHINGTON, DCSaying he 'could not stress the issue strongly enough,' President Bush urged the nation Monday in a televised address from the Oval Office. 'Fellow Americans, in this time of trial for our nation, I beseech you,' Bush said. 'Heed my words: This great nation, founded in freedom. Therefore, I implore all Americans. I ask you, in our hour of need. Good night, and God bless you.' Pundits agree that the message was the most forceful speech from the president since he interrupted regular programming to call on the nation in the spring of 2003. 