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The death of a 28-year-old woman who worked in an anti-plague laboratory in Russia is raising concerns about what caused her illness.

A British Airways passenger jet declared an emergency and descended rapidly while flying from London to Chicago.

Germany’s foreign intel chief warns it could become embroiled in a conflict with Russia as Moscow steps up its “shadow war” against European democracies.

The female staffer at the Irkutsk Anti-Plague Institute of Siberia and the Far East died from a “pneumonia of undetermined” origin last week, according to a regional governor.

Early indications suggest the Flydubai co-pilot accused of attacking his captain and trying to seize control of an Israel-bound plane was a ‘lone wolf’ acting alone, rather than as part of a larger organization or on behalf of a foreign government, multiple U.S. officials briefed on the investigation and a former Israeli security official told NBC News. NBC News’ Raf Sanchez reports.

The bombers at RAF Fairford “have been re-deployed to their home stations in the United States,” a Pentagon official told NBC News.

Officials cautioned that the investigation remains in its early stages and that possible links to an organization or foreign government haven’t been definitively ruled out.

Japan’s Defense Ministry said it was “deeply outraged by the extremely brutal and heinous crime committed by a U.S. Marine.”

TEL AVIV — A Flydubai pilot attacked his flight captain using a crash ax and tried to take control of the aircraft’s controls in an attempted terrorist attack, an official with the United Arab Emirates said Saturday.

Demonstrators across France are clashing with police as protests continue over what some students claims are teacher shortages and poor classroom conditions. NBC News’ Richard Engel reports.

With deaths outnumbering births in Ukraine by more than 3 to 1, having babies in a war-torn country becomes an act of national pride, and even survival. NBC News' Richard Engel reports from an underground bomb shelter turned delivery room.

The Wall Street Journal reports the co-pilot who tried to fly a plane bound for Israel into the ground had been banned from flying by his home country, Oman, over his radical views. Plus, an Israeli official told NBC News investigators discovered the co-pilot had posted on social media that he wanted to kill Jews. NBC News’ Matt Bradley reports.

British police said Friday that they had charged two Iranian nationals accused of plotting a terrorist attack against the Jewish community in Manchester on the eve of Yom Kippur, the holiest day in the Jewish calendar.

Group of Seven countries agreed to release tens of millions of barrels of diesel fuel and crude to cap soaring gas prices.

New video showed the heroic Israeli passengers who subdued a co-pilot who tried to bring down their FlyDubai flight. President Trump said the co-pilot has links to Iran. NBC News’ Matt Bradley reports.

Police arrested a dual U.K.-Iranian national on suspicion of plotting a terror attack following a security incident at a U.S.-run military air base in England that British authorities have linked to Tehran. NBC News' Tom Winter reports.

The Trump administration asked European allies to release diesel from their emergency stockpiles to increase global supplies and tamp down on soaring prices.

He is being hailed around the world as a hero for helping stop a passenger plane bound for Israel from plunging into the ground, despite his own severe injuries.

What we know about the potential midair disaster aboard the Flydubai flight when a pilot attacked his colleague causing the plane to plunge thousands of feet.

It was too early to say why a pilot stabbed another on the flight from Dubai to Tel Aviv, according to Israeli Prime Minister Benjamin Netanyahu.