Measles cases have spiked as a growing number of anti-vaxxers, opting out of immunizations for their kids, threaten decades of progress toward eliminating the disease.

Since Russia’s 2014 invasion of Ukraine, Western powers have hit Moscow with economic sanctions, hoping to put a stop to President Vladimir Putin’s aggression. Have they worked?

Brazil’s general election will be one of the biggest tests of its democracy in decades. Here’s a rundown of the candidates and issues to watch.