Long-range Russian bombers and other aircraft have penetrated or probed U.S. airspace 16 times in the last 10 days.
The government of Russia is contemplating a wave of measures as payback for sanctions imposed by the United States and European Union over Russia's interference and support for rebels in eastern Ukraine.
The economic warfare of sanctions and asset freezes between Russia and the West has affected industries as diverse as agriculture and technology.
The Ukrainian military continues to tighten the noose around pro-Russian separatists in eastern Ukraine, most of which have fled to the regional capital of Donetsk, increasing the likelihood of a long and bloody struggle for control of the city.
A new report offers the most concrete evidence yet that Russia is supplying arms to rebels in eastern Ukraine.
The United States has accused Russia of testing a ground based cruise missile system in direct contravention to the Intermediate-nuclear Forces Treaty.
An international arbitration court in the Hague has ruled that Russia must pay $50 billion to investors for the seizure of the Yukos oil company.
The United States has accused Russia of shelling Ukrainian military positions from inside of Russia as the Pentagon confirmed that the United States would be sending military advisers to aid the Ukrainian military.
Two Ukrainian fighter jets were shot down as the remains of victims from Malaysia Airlines Flight MH17 began to be flown back to the Netherlands.
Separatists in Ukraine have released the bodies of the dead from flight MH17 to Dutch authorities, and handed over the flight's recorders to Malaysian officials.
