Think tanks with nonprofit status aren't required to say much of anything when it comes to the source of their funding — whether it be billionaires or foreign governments. That can become a problem when such organizations significantly influence foreign policy — such as the Iran nuclear deal — without disclosing to whom they are financially beholden.

Anti-corruption journalist Ivan Golunov was arrested on what many are saying is trumped up charges in retaliation for his investigative work. It has sparked an outpouring of support within Russia and internationally.

Today, about 180,000 Iranians live across California. Some say hearing calls for war between the US and Iran is like a "roller coaster ride" — and opinions vary on whether they would support US military strikes.

Sudan is in crisis. The crackdown on its pro-democracy movement has been brutal, but there may be worse to come, including civil war and a flood of asylum-seekers.

Prosecutions in the US for those who help migrants with shelter, food, water or transportation are on the rise. It tracks a trend playing out in Europe since its 2015 refugee crisis.

Since the election of Donald Trump, Germany's leader Angela Merkel has been seen as an important global voice for Western liberal values. Her legacy is mixed, and it's unclear who will fill her shoes on the global political stage.

During tensions with the United States over Iran's nuclear ambitions, Ayatollah Khamenei has come out and declared a fatwa over the use of nuclear weapons. But what does this really mean for Iran and the recent nuclear deal? The World's host Marco Werman speaks with Omid Safi, a professor of Iranian studies at Duke University and the director of the Duke Islamic Studies Center, to find out.

US President Donald Trump has overruled Congress in a decision to re-arm Saudi Arabia and the UAE. What may be intended as a warning to Iran could undermine efforts to halt civilian casualties in the Yemen war.

US tensions with Iran are ramping up with no clear plan in sight. Democratic Sen. Chris Murphy of Connecticut, a member of the Senate Foreign Relations Committee, says that while Iran is acting belligerently, the US response is not helping.

Archeologists believe that Hasankeyf, Turkey's history began 11,000 years ago. Today, a dam reservoir will soon place the town deep underwater.