World War III: Are we at risk for a global war? | The Excerpt

Political, military and economic pressures along with global alliances and territorial disputes were all factors that led to World War I in 1914 and a second world war that began in 1939. With those same pressures evident today, is WW III a possibility? USA TODAY world affairs correspondent, Kim Hjelmgaard joins The Excerpt to discuss current wars and what a world war looks like in the 21st century.
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