"Julius Caesar" is a historical tragedy by William Shakespeare, believed to have been written in 1599. The play dramatizes the political conspiracy against the Roman dictator Julius Caesar, his assassination, and its aftermath. Key characters include Brutus, Cassius, and Mark Antony, who delivers the famous "Friends, Romans, countrymen" speech. The play explores themes of ambition, power, betrayal, and political ethics. "Julius Caesar" remains one of Shakespeare's most enduring and frequently performed works.