President Joe Biden said Friday he will nominate Rahm Emanuel, who served as a top aide to former President Barack Obama, as U.S. ambassador to Japan, seeking to fill a key diplomatic post that has been vacant for about two years.Biden also tapped Nicholas Burns, a former diplomat and currently a Harvard University professor, as U.S. ambassador to China.The nominations will require Senate approval.If confirmed, Emanuel, a 61-year-old former congressman known for his abrasive style and his close ties with Biden, formerly Obama's vice president, will be tasked with playing a key role in beefi…READ FULL ARTICLE