The U.S. and China should avoid escalating measures like the new Section 301 tariffs set to be imposed by the U.S., World Trade Organization Director-General Ngozi Okonjo-Iweala said on Thursday. The Biden administration earlier this week announced it was maintaining Section 301 tariffs on a range of Chinese goods and increasing the duties on certain products -- most notably electric vehicles, a key source of angst among lawmakers and U.S. officials. China has said “all necessary measures” are...