The war is going full scale, the US will officially invade Syria. Things could escalate into the third World War.
US-Ukrainian joint military exercises on Ukrainian territory have gradually transformed into the creation of a permanent American base. The initial signal was already a fact that similar exercises usually last for several days or weeks, but US troops remain there for several months.
American soldiers were invited by the Ukrainian government to train with the regular Ukrainian army. Joint training should continue until November 2016, what will happen after that is just a matter of speculation: bit.ly/1NLbMmT,