Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: Joe Biden and Donald Trump remain locked in a tight contest where third-party candidates could deci…

An experimental vaccine developed by Merck & Co is proving to be 97.5 percent effective at preventing Ebola. The World Health Organization’s Strategic Advisory Group of Experts is now permitting the use of the vaccine based on its Expanded Access/Compassionate protocol for experimental vaccines. The vaccine is already protecting some ninety thousand people in the eastern Congo, where there has been a devastating outbreak of Ebola.

The Ebola vaccine is proving highly effective in Eastern Conog, but distrust of health workers, skepticism of the disease’s existence, and attacks on medical facilities are stymying progress.

China's Digital Silk Road is running into roadblocks in Europe.

Developments in conflicts across the world that you might have missed this week.