Nemtsov served as a governor and deputy prime minister in the 1990s. He later became an opposition leader and sharp critic of Russian President Vladimir Putin. He was killed on a street in Moscow.
NPR's Kelly McEvers speaks with Maajid Nawaz, a self-described former Islamic radical who grew up in Essex, England. He now runs the counter-extremist organization Quilliam.
On Friday, gunmen shot to death the prominent Russian opposition figure Boris Nemtsov. Nemtsov was a longtime Russian opposition leader and a sharp critic of President Vladimir Putin.
The family of Steven Sotloff said they hoped the man identified as Mohammed Emzawi is brought to justice. The daughter of aid worker David Haines said she wanted a "bullet between ... [his] eyes."
The 70-year-old, best known for the stadium rock anthem "Rock & Roll (Part 2)," was convicted for sex offenses during the 1970s and '80s against three girls between the ages of 8 and 13.
Scientists have recovered cultivated wheat DNA from an 8,000-year-old submerged site off the British coast. The finding suggests hunter-gatherers were trading for the grain long before they grew it.
The British government has long been concerned about extremism emerging within its borders. Linda Wertheimer talks to Shashank Joshi of the Royal United Services Institute about extremism.
Ukraine's military says the withdrawal of 100-millimeter guns "is the first step" in a process that will be monitored by the Organization for Security and Cooperation.