A long convoy of nearly 300 trucks has left Moscow for the Ukrainian city of Luhansk, with the ostensible purpose of providing aid and averting a humanitarian disaster.
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 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.
Members of an international team of investigators have begun their investigation of the wreckage of Malaysia Airlines flight MH17, which crashed in eastern Ukraine, killing all 298 people on board.
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.
The Ukrainian military has launched an operation in an effort to secure the crash site of Malaysia Airlines flight MH17, which was shot down by pro-Russian rebels who mistook it for a Ukrainian military transport.
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.
A political crisis is brewing in Ukraine as two ruling parties withdrew from the parliament, and the legal authorities try to ban the Communist Party.
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.
