WASHINGTON (AP) — As Japan’s chief trade negotiator headed to Washington for another round of tariff negotiations last week, a bipartisan Japanese group promoting “Japan-China Friendship” completed its visit to Beijing. Just a week before, the leader of the junior partner in Japan’s ruling coalition visited Beijing, carrying a personal message from newly elected Japanese Prime Minister Shigeru Ishiba to Chinese President Xi Jinping. While the contents of the letter remain private, discussions