Amid escalating tensions over the Falkland Islands, Argentinian President Cristina Fernandez de Kirchner accused Great Britain of militarizing the South Atlantic and said Tuesday her country would file a protest at the United Nations.

Seventy delegates and a whole lot of momentum: That's what's at stake Tuesday when three states hold contests in the race for the Republican presidential nomination.

California's voter-approved ban on same-sex marriage violates the U.S. Constitution, a federal appeals court in San Francisco ruled Tuesday.