First up today, we have more for you on President Obama's surprise trip to Afghanistan. Afghan forces are expected to fully take over their country's security after most American troops leave in 2014. While he was there on Tuesday, President Obama signed a deal about how the United States and Afghanistan will work together after that. He also talked about the challenges that are still ahead for US forces. 

I recognize that many Americans are tired of war. As president, nothing is more wrenching than signing a letter to a family that falls. We are walking into the eyes of a child who'll grow up without a mother or father. I'll not keep Americans in harms way a single day longer than it's absolutely required for our national security. But we must finish the job we started in Afghanistan and end this war responsibly.

Back in the United States, there are some different reactions to the President's visit to Afghanistan. Former Massachusetts governor Mitt Romney, the Republican Party’s presumptive presidential nominee, supported the trip. He said quote our troops and the American people deserve to hear our president about what is at stake in this war. But US senator James Inhofe, a republican from Oklahoma, said this visit is more about politics, quote clearly this is campaign related, this trip to Afghanistan is an attempt to show up the president's national security potentials, he said.

One of Governor Romney's primary opponents is officially dropping out of the Republican race. Former US speaker of the House, Newt Gingrich, announced yesterday he is suspending his campaign. Gingrich, who won primary contest in South Carolina and Georgia, thanked his supporters. He also expressed his support for Governor Romney. 

Couple of days ago, we had a story on Chinese activist Chen Guangcheng. He escaped from house arrest, and then there were questions about where he was. The answer was: in the US embassy in China. Secretary of State Hilary Clinton is in Beijing right now. She is there for a meeting about global issues like economy and technology. But the news that Chen was in the US embassy could overshadow that meeting. Chen has spoken out against Chinese government over human right issues, that's something US officials have also raised concerns about. Chen left the US embassy to go to a hospital on Wednesday. But there are conflicting reports about how he left. US and Chinese officials say it was Chen's decision. One of his friends says Chen was forced to leave. Later Wednesday, Chen told CNN that he wants to leave China. He said he is worried his life could in danger if he stays.