"How do you get the electorate to support the constant burden of defending the liberal system?"

That’s smart, but I think I’m less sure that time is on our side. The weakness with any democratic foreign policy is the problem of motivation. How do you get the electorate to support the constant burden of defending the liberal system?

It was barely possible when we were facing an obviously menacing foe like the Soviet Union. But it’s harder when the system is being gouged by a hundred sub-threshold threats. The Republicans seem to have given up global agreements that form the fabric of that system, while Democrats are slashing the defense budget that undergirds it.

Moreover, people will die for Mother Russia or Allah. But it is harder to get people to die for a set of pluralistic procedures to protect faraway places. It’s been pulling teeth to get people to accept commercial pain and impose sanctions.

The liberal pluralistic system is not a spontaneous natural thing. Preserving that hard-earned ecosystem requires an ever-advancing fabric of alliances, clear lines about what behavior is unacceptably system-disrupting, and the credible threat of political, financial and hard power enforcement.