Oil prices briefly dropped below $50 a barrel Monday for the first time in five and a half years. What's driving the oil prices plunge, and how long will it last?
Last year, Russia and Ukraine were in a military contest. This year, with each facing steep economic decline, they have turned inward in what can be seen as a contest of domestic reform. With its new-found freedoms, Ukraine may win.
The world's most connected country has seen its leader emerge as a well-connected global leader. Merkel's style of diplomacy will be tested in 2015, as it was in 2014 during the Ukraine crisis with Russia.