NPR News

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NPR's Linda Wertheimer speaks with Nickolay Mladenov, U.N. special envoy to Iraq, about the situation in northern Iraq, where the Islamic State is fighting for control.
Liberia and Sierra Leone have deployed troops to try to isolate areas hardest-hit by the Ebola virus. Nigeria announced a state of emergency as new cases of the disease are reported there.
It's a mystery how butterflies manage to make their brilliant wing colors, but Yale physicists got a glimpse when they took the question to the lab, breeding dull brown butterflies into purple ones.
Cross-border attacks continued over the weekend between Israel and Gaza as talks aimed to end the fighting appeared to stall in Cairo.
India recently reneged on a World Trade Organization trade deal years in the making. Prime Minister Narendra Modi said he defied the WTO to protect his country's poor.
The U.S. Air Force just released a strategy for the future, involving hypersonics and unmanned systems. NPR's Linda Wertheimer talks about the plan with Air Force Gen. David Allvin.