Trump has officially begun his second term, and immediately afterwards, newly-appointed U.S. Secretary of State Marco Rubio has "condemned" China on the South China Sea issue on diplomatic occasions.

Where is the Trump administration's South China Sea policy heading? Will it strengthen the U.S. "small multilateral" mechanism? Ma Bo, an associate professor from School of International Studies, Nanjing University, shared his opinion in an exclusive interview with the Voice of the South China Sea.