Exercises show Washington keeping alliances strong as Pacific adversaries bring new threats

The United States, South Korea and Japan this week are conducting “advanced” trilateral air and naval exercises in East Asia, less than two weeks after the leaders of Russia, China and North Korea issued an unprecedented challenge to the US-led world order.

​ The United States, South Korea and Japan this week are conducting “advanced” trilateral air and naval exercises in East Asia, less than two weeks after the leaders of Russia, China and North Korea issued an unprecedented challenge to the US-led world order. Read More Breaking News, Latest News and Videos | CNN