The Non Aligned Movement struggled to find relevance after the fall of the Soviet Union because was largely based on opposition to the Cold War. The fall of the Soviet Union ended communism hence the movement lost its significance and influence
The part of the ocean or sea that cuts far into the adjacent land mass is often referred to as a "shelf" or "plateau", since it is simply an extension of the land mass that makes up the area above the water.
When he said he felt an "a sunburst of deliverance" he meant he felt a sense of freedom. As in, the war is over, I can go home, and a big stress has just been lifted off my shoulders.
