Colombia has the world's second largest population of internally displaced persons (five million) due to the half-century internal armed conflict—the longest-running war in the Western Hemisphere (since 1964). Control for territory and popular support among the three main groups (left-wing rebel forces FARC & ELN, right-wing paramilitaries, Colombian police/military) has left 220,000 killed, 75% of them non-combatants. Since 2000, the US has exacerbated the violence by sending more than $9 billion in mostly military assistance. Colombia, which has both Pacific and Atlantic coastlines, holds strategic interest for the US for global trade and military posturing.

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