NEW YORK (Project Syndicate) — How does the current global economic outlook compare to that of a year ago? In 2017, the world economy was undergoing a synchronized expansion, with growth accelerating in both advanced economies and emerging markets. Moreover, despite stronger growth, inflation was tame — if not falling — even in economies like the United States, where goods and labor markets were tightening.

Stronger growth with inflation still below target allowed unconventional monetary policies either to remain in full force, as in the eurozone and Japan, or to be rolled back very gradually, as in the U.S.

The combination of strong growth, low inflation, and easy money implied that market volatility was low. And with the yields on government bonds also very low, investors’ animal spirits were running high, boosting the price of many risky assets.

While U.S. and global equities were delivering high returns, political and geopolitical risks were kept largely under control. Markets gave President Donald Trump the benefit of the doubt during his first year in office; and investors celebrated his tax cuts and deregulatory policies. Many commentators even argued that the decade of the “new mediocre” and “secular stagnation” was giving way to a new “goldilocks” phase of steady, stronger growth.

It’s a different story now

Fast-forward to 2018, and the picture looks very different.

Though the world economy is still experiencing a lukewarm expansion, growth is no longer synchronized. Economic growth in the eurozone, the United Kingdom, Japan, and a number of fragile emerging markets is slowing. And while the U.S. and Chinese economies are still expanding, the former is being driven by unsustainable fiscal stimulus.

Worse still, the significant share of global growth driven by “Chimerica” (China and America) is now being threatened by an escalating trade war. The Trump administration has imposed import tariffs on steel, aluminum, and a wide range of Chinese goods (with many more to come), and it is considering additional levies on automobiles from Europe and the rest of the world. And currently the renegotiation of the North American Free Trade Agreement is stalled.

Thus, the risk of a full-scale trade war is rising.

Meanwhile, with the U.S. economy near full employment, fiscal-stimulus policies, together with rising oil and commodity prices, are stoking domestic inflation. As a result, the Federal Reserve must raise interest rates faster than expected, while also unwinding its balance sheet. And, unlike in 2017, the U.S. dollar BUXX, -0.03% is now strengthening, which will lead to an even larger U.S. trade deficit and more protectionist policies as Trump, assuming he remains true to form, blames other countries.

Tighter policies, even in Europe

At the same time, the prospect of higher inflation has led even the European Central Bank to consider gradually ending unconventional monetary policies, implying less monetary accommodation at the global level. The combination of a stronger dollar, higher interest rates, and less liquidity does not bode well for emerging markets.

Likewise, slower growth, higher inflation, and less monetary-policy accommodation will temper investor sentiment as financial conditions tighten and volatility increases.

Despite strong corporate earnings — which have been goosed by the U.S. tax cuts — U.S. and global equity markets have drifted sideways in recent months. Since February, equity markets DJIA, +0.19% have been buffeted by fears of rising inflation and import tariffs, and by the backlash against big tech.

There are also growing concerns over emerging markets such as Turkey, Argentina, Brazil, and Mexico, and over the threat posed by populist governments in Italy and other European countries.

The danger now is that a negative feedback loop between economies and markets will take hold. The slowdown in some economies could lead to even tighter financial conditions in equity, bond, and credit markets, which could further limit growth.

Since 2010, economic slowdowns, risk-off episodes, and market corrections have heightened the risks of stag-deflation (slow growth and low inflation); but major central banks came to the rescue with unconventional monetary policies as both growth and inflation were falling.

Stagflationary risks

Yet for the first time in a decade, the biggest risks are now stagflationary (slower growth and higher inflation). These risks include the negative supply shock that could come from a trade war; higher oil prices, owing to politically motivated supply constraints; and inflationary domestic policies in the U.S.

Thus, unlike the short risk-off periods in 2015 and 2016, which lasted just two months, investors have now been in risk-off mode since February, and markets are still moving sideways or downward. But this time the Fed and other central banks are starting or continuing to tighten monetary policies, and, with inflation rising, cannot come to the markets’ rescue this time.

Another big difference in 2018 is that Trump’s policies are creating further uncertainty. In addition to launching a trade war, Trump is also actively undermining the global economic and geostrategic order that the U.S. created after World War II.

Moreover, while the Trump administration’s modest growth-boosting policies are already behind us, the effects of policies that could hamper growth have yet to be fully felt. Trump’s favored fiscal and trade policies will crowd out private investment, reduce foreign direct investment in the U.S., and produce larger external deficits.

His draconian approach to immigration will diminish the supply of labor needed to support an aging society. His environmental policies will make it harder for the U.S. to compete in the green economy of the future. And his bullying of the private sector will make firms hesitant to hire or invest in the U.S.

Over time, growth-enhancing U.S. policies will be swamped by growth-reducing measures. Even if the U.S. economy exceeds potential growth over the next year, the effects of fiscal stimulus will fade by the second half of 2019, and the Fed will overshoot its long-term equilibrium policy rate as it tries to control inflation; thus, achieving a soft landing will become harder.

By then, and with protectionism rising, frothy global markets will probably have become even bumpier, owing to the serious risk of a growth stall — or even a downturn — in 2020. With the era of low volatility now behind us, it would seem that the current risk-off era is here to stay.

This article was published with permission of Project Syndicate — Trump May Kill the Global Recovery.