New Cold War
In the Ukraine Crisis, East Ukraine has become another battlefield for Russia and the West, especially USA. Russian Prime Minister himself even depicted East-West relations as having "fallen into a new Cold War". The West condemned Russia for providing heavy weapons to rebels ,which aggravated violence happened in East Ukraine, and also invading Ukraine's land. Yet, actually this is just another incident worsening the relationship between Russia and the West, given that they are dissatisfied with each other for a long time. In view of what Russia has done in Ukraine, the West supplanted Russia to show their discontent, like kicking it out of G8. However, Russia won't give up as it wants Ukraine to join its allies. This implies that the conflicts between Russia and USA will intensify in the future, worsening the two's relationship and leading to another war, which is undesirable.
Effectiveness of foreign intervention
From this Ukraine Crisis, it is obvious that foreign intervention doesn't work. The crisis started from 21 November, 2013 and it remains unsolved till now. In the beginning, Russia, seemed to be intend to solve the problem. However, it was of the West's belief that Russia invaded Ukraine after the incident of Crimea. Russia, actually helped Ukraine for its own sake, aimed to get benefit from it. And the West, leading by USA, criticized Russia for occupying Ukraine's land. In fact, USA and Russia were making use of Ukraine to convey their discontent towards each others, which has been discussed in the above. Unfortunately, Russia adopted a strong attitude, which in turns made the thing more difficult to deal with. What the West had done could be said in vain, which implied that foreign intervention is not effective in this circumference.