Abstract
The topic deals with the most serious crises threatening global security, foremost of which is the Russian-Ukrainian crisis, which developed after a war that is still raging. The study also dealt with the role of the United States in these crises, which is their common denominator. The research delved into the depths of the roots of this crisis and to know the reasons for each party (Russia and Ukraine) and their insistence not to reach a peaceful solution to it. The researcher also laid out the possible scenarios for this crisis, one of which was later achieved. He also touched on the structure of the international political system after this crisis.

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