Experts fear spike will render continental U.S. vulnerable.
The cases of infected pregnant women has risen since mid-February.
Seven best-known dissidents allowed to make one journey abroad.
More than 200,000 soldiers warning Brazilians about risks of the disease.
Battle between rival groups quelled with no escapes reported.
Argentine experts say no sign of 43 students missing since 2014.
Money will go to mosquito control efforts, vaccine research programs.
Seen as step toward healing rift between two branches of Christianity.
Colombia looks to implement peace deal with rebel group.
Numerous security plans in recent years have failed to curb violence.
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