Brazil's Senate is set to start voting Wednesday on whether to open an impeachment trial against President Dilma Rousseff. If a simple majority is reached, she will be suspended automatically for six months and Brazil's political crisis will enter dramatic new territory.

But while Rousseff faces the possible end of her political career, Brazil's problems appear far from over. Here's a look at how Latin America's biggest country got into the mess -- and what could happen next.

North Korea has wrapped up its first ruling party congress in nearly four decades.

Here are five things we learned from the four-day gathering of the isolated, nuclear-armed state's top decision-making body.

One Brazilian is accused of taking bribes, another with hiding a secret bank account, a third with trying to help a man escape prison.

So who are they -- hardened conmen? Mobsters?

By letting go of his prime minister after just 20 months in the post, Turkey's President Recep Tayyip Erdogan has shown his iron will to create a presidential system where one man has total authority.

Ahmet Davutoglu, who served as premier since Erdogan became president in August 2014, in his farewell statement vowed undying loyalty to the Turkish strongman and never to utter a "single word" of criticism against him.

Three years ago, Albert and Yassin left their homes in Kosovo and Albania to wage jihad in Syria. Now they're back, swelling the ranks of jihadists in a region the Islamic State has called a "new front" in Europe.

Yassin, 30, who now works as a halal butcher in a downtrodden suburb of Albania's capital Tirana, refused to give his real name out of fear of repercussions.

U.S. Republicans have taken to social media in droves to burn their voter registration cards, renounce their political affiliation, and pledge never to vote for their party's presumptive nominee Donald Trump in November.

Trump is basking in the glory of an all-but-certain victory in the chaotic GOP nomination race, after rivals Ted Cruz and John Kasich raised their white flags of surrender.

After over one-and-a-half years of cohabitation, cracks are emerging in Turkey's ruling tandem of President Recep Tayyip Erdogan and Prime Minister Ahmet Davutoglu, sparking uncertainty over the premier's future.

Many believed Davutoglu would be a puppet premier when Erdogan switched to the presidency in August 2014, but the former foreign minister has made conspicuous efforts to carve out his own profile, to the possible irritation of the combative head of state.

Economic concerns and the desire for a sense of purpose and revenge are the major factors pushing young Syrians into the arms of jihadist groups, a study released on Wednesday found.

The report by peace activist group International Alert draws on interviews with 311 Syrians, their families and members of their communities in Syria, Lebanon and Turkey.

With U.S. and European support, African states threatened by Boko Haram are out to smash the militant Islamist group terrorizing the region -- but a coordinated response is required if they are to succeed.

A regional offensive launched early last year against the group by Chad, and Nigeria under new President Muhammadu Buhari has seen Boko Haram driven out from numerous towns and villages that it controlled in northeastern Nigeria.

Five years after the killing of Al-Qaida chief Osama bin Laden, the network he founded is far from dead even if it has suffered a series of setbacks.

Replaced as the preeminent global jihadist power by the Islamic State group, Al-Qaida nonetheless remains a potent force and dangerous threat, experts say.