The U.S. is allied with every major industrialized power on the planet. America’s friends in Asia and Europe generally are prosperous and populous. Yet decades after the conflicts which led to Washington’s security guarantees for them, the allied gaggle remains a bunch of “losers,” to paraphrase Donald Trump.

Last week North Korea staged its fourth nuclear test. Naturally, South Korea and Japan reacted in horror. But it was America which acted.

The U.S. sent a Guam-based B-52 wandering across South Korean skies. “This was a demonstration of the ironclad U.S. commitment to our allies in South Korea, in Japan, and to the defense of the American homeland,” opined Adm. Harry B. Harris, Jr., head of Pacific Command.

Unfortunately, the message might not work as intended. CNN’s Will Ripley reported from Pyongyang that “A lot of North Korean military commanders find U.S. bombers especially threatening, given the destruction here in Pyongyang during the Korean War, when much of the city was flattened.” Which sounds like giving the North another justification for building nuclear weapons.

Worse, though, reported Reuters: “The United States and its ally South Korea are in talks toward sending further strategic U.S assets to the Korean peninsula.” Weapons being considered include an aircraft carrier, B-2 bombers, F-22 stealth fighters, and submarines.

A better response would be for Seoul to announce a major military build-up. The Republic of Korea should boost its military outlays—which accounted for a paltry 2.4 percent of GDP in 2014, about one-tenth the estimated burden borne by the North. The ROK also should expand its armed forces from about 655,000 personnel today to a number much closer to the DPRK’s 1.2 million.

Doing so obviously would be a burden. But if the economic wreck to its north can create such a threatening military, why cannot the ROK, which enjoys a roughly 40-1 economic and 2-1 population advantage, meet the challenge?

South Korea is not alone. Japan has been another long-term defense welfare client of the U.S. Only under Prime Minister Shinzo Abe has Japan begun to do more, mostly because his government is no longer convinced that the U.S. will forever subsidize Japan’s defense.

Alas, the Europeans have not yet come to that conclusion. NATO sets a two percent of GDP standard for military outlays, yet the 2015 European member average was just 1.5 percent. Only four European states hit two percent.

Moscow’s aggressive behavior against Georgia and especially Ukraine set off all sorts of angst throughout Europe. U.S. officials and NATO leaders made their usual calls for members to hike military outlays, but most European states did what they usually do, continued to cut spending.

Under normal circumstances European behavior would be mystifying. The European Union demonstrates the continent’s ability to overcome historic national divisions and collaborate for a common purpose.

Collectively the Europeans enjoy around an 8-1 economic and 3-1 population advantage over Moscow. Even after its recent revival, Russia’s military today is a poor replica of that during the Soviet era.

Yet when Moscow acts against non-NATO members Europe’s eyes turn to Washington for military relief. Instead of acting in their presumed interests, they push for U.S. action.

Washington’s allies generally are a pathetic lot. Benefiting from sizeable and capable populations and enjoying large and advanced economies, they nevertheless can’t be bothered to invest heavily in their own defense.

When troubles arise U.S. friends expect the American cavalry, in the form of a B-52 in Korea this time, to arrive. As a result, I argue on National Interest online, “the U.S. is expected to defend much of the globe. And the bulk of Washington’s over-size military outlays are to project power for the benefit of its ne’er-do-well allies.”

In the years ahead Washington should take a page from the Trump play-book and choose as allies a few “winners,” nations whose friendship actually makes America more secure. The U.S. should stop treating national security as a form of welfare for other states.