The political principle that surpasses<u> nationalism and supports economic</u> and political cooperation among nations and peoples is known as internationalism. The people who support this principle are known as internationalists, They believe that the people across the world should unite to achieve their common interests and the governments should cooperate for common long term interests. Globalism is similar to Internationalism.
The Assyrians dependence on military strength was a bad idea. Since they attacked so many nations, they gained a lot of enemies. So when their military was declining, they received attacks from multiple enemies. Plus they didn't have anything to fall back to once their military shrunk.