The Asia Society announced on Thursday that it had marked out territory on the Washington policy landscape with the purchase of a US$17.5 million building that will give it a permanent spot alongside other US capital think tanks dating back more than a century, striving for influence. The 70-year-old institution, founded by the grandson of oil mogul John D. Rockefeller, has focused more on public policy in recent years, in addition to its traditional focus on arts, culture and education, under...