The top U.S. diplomat for East Asia said Saturday that the form of Washington's alliance with Japan will "change constantly" amid altering regional security situations."Alliance relationships are not static," David Stilwell, the U.S. assistant secretary of state for East Asian and Pacific affairs, told a press conference at the U.S. military's Misawa Air Base in the northeastern Japan prefecture of Aomori, when asked about his views on recent remarks by U.S. President Donald Trump that the U.S.-Japan alliance is unequal.Stilwell said the relationship "will need to adapt" to new threats, cit…READ FULL ARTICLE