Stories by Willis Sparks of GZERO Media

China's government still fears the message from Tiananmen Square

Pro-democracy student demonstrators face-to-face with police during the funeral ceremony of liberal reformer Hu Yaobang in April, 1989. The protests were crushed six weeks later. Photo: Catherine Henriette/AFP/Getty Images

In the spring of 1989, Chinese students began gathering in Beijing's Tiananmen Square, at first to mourn the death of reformist leader Hu Yaobang and then in hopes of persuading their government to allow greater political freedom across the country.

Flashback: Over a period of six weeks, the crowd swelled as older people joined and the list of demands broadened. The occupation of the square took on a life on its own, and some within the Communist Party leadership began to see a threat to their monopoly on political power.

Waves of migration will only grow larger

A migrant caravan crosses from Guatemala into Mexico. Photo: John Moore/Getty Images

In recent years, the accelerating cross-border flow of migrants fleeing violence and poverty has remade the politics of Europe and the United States.

What to watch: A startling new study from Stanford University warns that the conflicts we've seen to date may just be the opening act of a much larger and more dangerous drama.

Trump's cash for troops plan has some logic, and big risks

U.S. troops based in Germany ahead of NATO exercises in Hungary. Photo: Matej Divizna/Getty Images

Being a U.S. ally might soon get a lot more expensive. The Trump administration is reportedly preparing a plan that would force countries not only to pay for the full cost of hosting American troops in their territory, but also to pony up an additional 50% premium on that bill for the security that the U.S. soldiers provide.

By the numbers: Under those terms, some countries will pay as much as six times the amount they currently pay. To put this in perspective, U.S. troops are stationed in more than 100 countries around the world. There are 56,000 American soldiers in Japan, 35,000 in Germany, 28,500 in South Korea, 12,000 in Italy, and 9,000 in the U.K.