A corn purchaser writes on his account in northwest China in 2012. In November 2013, officials began rejecting imports of U.S. corn when they detected traces of a new gene not yet approved in China.
Usman (right), 7 months, and Abdullah (left), 18 months, are held by their mothers while they wait to receive the polio vaccine at the Jalozai refugee camp near Peshawar, Pakistan.
Daniel Berehulak/Getty Images
Zhou Yongkang, who at the time was Chinese Communist Party Politburo Standing Committee member in charge of security, attends a plenary session of the National People's Congress at the Great Hall of the People in Beijing, China in 2012.
Ng Han Guan/AP
A health worker gives a child the polio vaccine in Bannu, Pakistan, June 25. More than a quarter-million children in Taliban-controlled areas are likely to miss their immunizations.
A. Majeed/AFP/Getty Images
A U.S. company that supplies meat to some fast-food chains in China has pulled all of its products, some of which were chicken nuggets sold in Hong Kong, made by a Chinese subsidiary.
Australian Prime Minister Tony Abbott speaks during a news conference in Sydney last week. Abbott has announced the deployment of 190 police to help secure the MH17 wreckage site, where 37 Australians were killed.