At least 43 Cuban dissidents have been arrested in areas near where Pope Benedict XVI visited last week, dissidents said Tuesday, as the United States urged their immediate release. "We have been able to confirm that 43 opposition members have been detained -- 10 women and 33 men -- in a crackdown on Monday in the Santiago de Cuba area. All remain under arrest," said Elizardo Sanchez, head of the outlawed but tolerated Cuban Human Rights and National Reconciliation Commission.