And President Bush is expected to announce new measures today intensifying the U.S. economic and diplomatic isolation of Cuba. Advisers say Bush will announce the U.S. will not accept a political transition in which President Fidel Castro hands off authority to his brother Raúl. Raúl Castro has served as acting Cuban president since Fidel Castro stepped down to undergo medical treatment last year. President Bush is expected to encourage Cuban military and police to work against the Cuban government, telling them: “There is a place for you in a new Cuba.” He is also expected to unveil plans for a so-called “freedom fund” that Cuba would receive under different leadership.