The economic toll if Biden is right and Putin invades Ukraine

Markets will have a major lump to swallow if Russia president Vladimir Putin chooses to invade Ukraine in coming days, as President Biden said he expects.

"At this moment, I'm convinced he's made the decision," Biden said in a brief address from the White House on Feb. 18. When a reporter pressed on whether he expected Russia to invade, Biden said "yes."

Geopolitical scares typically produce very short-lived market disruptions, with commodities and risk assets quick to recover. The standoff between Russia and Ukraine could be different. If Russia goes big, it could quickly subdue Kyiv, the nation’s capital, oust the democratically elected government and return the country to de facto Russian rule.

Ukraine is a former Soviet republic that has been independent since the USSR dissolved in 1991, and is increasingly aligned with the West. Putin wants to turn back the clock and restore some of the old USSR's territorial and political dominance, and Ukraine is the main target.

If Russia invades, it could turn out to be a strategic mistake that mires Russia in years of guerrilla warfare and economic isolation. And an invasion could take many forms. The problem for markets is guessing which of many levers Putin will pull. A full invasion would convulse energy and commodity markets and probably trigger a sharp stock selloff, which markets are beginning to price in. But Putin could pull back at the last second and agitate just below the level of aggression likely to trigger U.S. and European sanctions. Here’s the outlook under four different scenarios:

A full invasion. Many analysts still think it’s unlikely Putin will send troops all the way to Kyiv, if only because it would provoke a damaging economic and perhaps military response by Europe and the United States. Yet this is also the biggest tail risk investors face from the standoff and the one that would cause the most damage.

If Russia takes over most or all of Ukraine, Europe and the United States will probably impose sanctions that restrict or completely block Russian exports of key commodities including aluminum, nickel, palladium, titanium, platinum and certain grains. These are important supply-chain products for U.S. and European producers, and losing an important source of world supply will push prices up. This would worsen inflation that is already at 40-year-highs in the United States and Europe.

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Oil and natural gas markets will quake as well, because Russia is a top producer of each and Europe’s No. 1 source of natural gas. But a shutdown of Russian energy exports is unlikely. Europe is too dependent on Russian energy to boycott it or include oil and gas on a sanctions list. Russia needs the revenue from energy sales to sustain an otherwise stagnant economy, especially if it’s facing new sanctions while financing a major military operation.