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UNITED NATIONS - President Barack Obama is telling world leaders that a paradox defines the world today as the world is by many measures less violent and more prosperous than ever before.

Yet, he says that people are losing trust in institutions, which makes governing more difficult. Obama says world leaders can choose to press forward with a better model of cooperation and integration, or they can retreat into a world that is sharply divided and ultimately in conflict.

Obama is addressing the United Nations for the final time as president.

Obama says the benefits of global integration need to be broadly shared. He says the global economy needs to work better for all people, not just those at the top.