China needs to be a more responsible power as it gains global influence and avoid flexing its muscles in disputes with smaller countries over issues like the South China Sea, U.S. President Barack Obama told CNN in an interview to be aired Sunday.

Obama, who meets with President Xi Jinping at a Group of 20 summit starting Sunday in China, told CNN the United States supports the peaceful rise of China but that Beijing had to recognize that "with increasing power comes increasing responsibilities," according to excerpts released Friday.

"If you sign a treaty that calls for international arbitration around maritime issues, the fact that you're bigger than the Philippines or Vietnam or other countries ... is not a reason for you to go around and flex your muscles," Obama said. "You've got to abide by international law."