Richard N. Haass: “I take offense at the comparison to the run-up to the Iraq War.”

Whatever it is we do in this part of the world, multilateralism will prove essential. We simply cannot deal adequately with China's power and China's reach unilaterally.

This is not foreign policy. These are acts of aggression against individuals.

We ought to have a race to the top, not a race to the bottom.

Mr. Putin clearly wants to get Ukraine within the Russian sphere of influence. He does not want Ukraine to affiliate with the European Union. Obviously, he doesn't want it to affiliate with NATO.