Iranian President Hassan Rouhani has started a shopping tour in Europe just days after the lifting of international sanctions over Iran's nuclear programme. He wants to let the world know that Iran is back in business. And European companies are lining up for a share in the Iranian market - promising billions of dollars in new deals. But what does the end of Iran sanctions mean for the global economy?

With oil prices plunging to their lowest levels in a decade, a deal between Russia and Saudi Arabia could take two million barrels a day off the market. Less than two years ago, a barrel of oil was over $100. Since then, it has fallen to around $30. That is the business story. But it is also a political story. Watch to learn more.

Think you know why oil prices are so low? Think again. Here's the real reason behind the fall in oil prices and why the banks aren't concerned.

As Brent oil trades near $28 a barrel, Bloomberg weighs the impact of cheap oil on countries, corporations and consumers.

Think you know what's really going on with the War in Syria and ISIS? Think again. Here's an in-depth look at what's happening in the Middle East, the powers involved, and what to expect.

Russia has received additional intelligence confirming that oil from deposits controlled by Islamic State is moved through Turkey on an industrial scale, said Vladimir Putin. President Recep Erdogan said he will resign if this is confirmed.

As coalition attacks on ISIL-controlled oil sites intensify, militants are being forced to look, not only for a new stronghold, but also for new sources of income.

A member of the Iraqi Parliament, Dr Mowaffak al Rubaie, tells RT how ISIS manages to earn millions of dollars selling oil on the black market in Turkey and reveals that wounded terrorists are being treated in Turkish hospitals.

Bloomberg Intelligence's Vincent Piazza reports on OPEC and the price of oil. He speaks on "Bloomberg Surveillance."

The September vote on Iran nuclear deal is heading towards a bitter standoff between US President Obama and Congress.

This week, Ivan Lo shares the real reason why oil prices are rising. Contrary to what analysts and experts tell you, it has nothing to do with global supply and demand.

On “Before the Bell,” Bloomberg’s Betty Liu and David Wethe report on the repercussions of lower oil prices on industry perks. They speak on “In The Loop.”