US President Barack Obama won the Nobel Peace Prize four years ago. Today, the country he leads is seen -- according to a new poll -- as the biggest threat to world peace.

• Why Barack Obama was particularly unsuited to live up to the ideals of the Nobel Peace Prize

The global survey, conducted by WIN/Gallup International, polled residents in 68 countries on everything from the global economy to politics and living conditions.

According to the poll, 24 percent of the surveyed countries ranked the United States as the greatest threat to world peace today, followed by Pakistan at 8 percent, China at 6 percent and four countries (Afghanistan, Iran, Israel and North Korea) tied at 5 percent. [Russia near bottom at 2%]

Thirty-seven percent of Mexicans ranked their northern neighbor the top threat to the world.