Four Americans who may have been exposed to the deadly Ebola virus in Sierra Leone have arrived in the United States and are being observed at the University of Nebraska Medical Center, the hospital said on Sunday.
A 20-year-old man was charged on Sunday with first-degree assault in last week's shooting of two policemen during a protest rally in Ferguson, Missouri, a crime that shocked a city that has been devastated by months of racial strife.
Moscow was ready to put its nuclear forces on alert to ensure Russia's annexation of Crimea from Ukraine last year, President Vladimir Putin said in a pre-recorded documentary aired on Sunday.
U.S. Secretary of State John Kerry said the United States would have to negotiate with Syrian President Bashar al-Assad for a political transition in Syria and was exploring ways with other countries to pressure him into agreeing to talks.
