May 16

The United States and China held firm Saturday to deep disagreements over increasingly assertive Chinese activity in disputed areas of the South China Sea, as Beijing politely but pointedly rejected U.S. Secretary of State John Kerry's push for it to…

Riding on more sanctions and rhetoric, tensions between the U.S. and Iran continue to escalate. Margaret Warner discusses whether the U.S. and Iran appear to be sliding into war with Tufts University's Vali Nasr and Dennis Ross, who served in…