HILLARY CLINTON HAS OFFICIALLY announced her decision to run in the 2016 presidential election, which has aroused heated discussions not just in the United States but around the world. Comments:

A strong female politician, Clinton has gained fame and position with her political ability and she is considered the most experienced and best prepared candidate so far for the 2016 US election. However, US citizens might still consider her gender and her age before deciding whether to vote for her. Will they accept a 68-year-old female president in the White House? The idea of a middle-aged male president is still deeply rooted in many US citizens' minds; is it easy to change?

Sun Xingjie, a professor of international relations at Jilin University, April 14