This weekend is seen as Tehran's best opportunity to make concessions on the Iran nuclear program if it is has any intention of doing so.
On Wednesday, the Department of Justice filed a complaint in US District Court against Apple and a group of publishers. Hachette, HarperCollins and Simon & Schuster have agreed to settle. The rest will probably fight on.
Core issues from South Sudan's independence from Sudan remain unresolved, like sharing oil revenue. But the current rhythm of fight, talk, fight, talk is unsustainable, says guest blogger.