A passenger plane carrying four crew members and 57 passengers crashed in a residential area outside São Paulo. Authorities say there are no survivors of the crash.

Three Taylor Swift concerts were canceled in Austria this week, after authorities foiled planned attacks on the venue.

Three young men are now in custody, and at least two of them recently pledged allegiance to the Islamic State — specifically an affiliate group known as ISIS-K.

This isn't the first time Islamic State-related groups have been tied to attacks in Europe — over 140 people were killed in an attack on a Moscow concert hall earlier this year, and an explosion at an Ariana Grande concert in 2017 killed 22 and injured more than a thousand.

So - what exactly is ISIS-K, and how should we think about their presence in Europe?

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(Image credit: ROLAND SCHLAGER)

Ukraine is on day four of a surprise attack on Kursk, some 330 miles south of Moscow. Videos are emerging of burned out Russian vehicles, Russians surrendering and long lines of Russian cars fleeing.

Two West African countries have cut diplomatic ties with Ukraine. This follows claims that Ukraine helped anti-government rebels in Mali battle and possibly kill Malian soldiers and Russian forces.

Bangladeshi Nobel laureate Mohammad Yunus becomes interim leader days after former Prime Minister Sheikh Hasina fled the country.