NEW YORK (AP) — President-elect Donald Trump is using Twitter to renew his defense of his engagement with the leader of Taiwan, a breach of diplomatic protocol as the U.S. shifted recognition from Taiwan to China nearly 40 years ago. Taiwan's official Central News Agency, citing anonymous sources on Saturday, said that Edwin Feulner, founder of the Washington-based Heritage Foundation, was a "crucial figure" in setting up communication channels between the sides. "The one-China policy is the cornerstone of the healthy development of China-U.S.