A popular thesis since the 1930s is that a natural progression exists from currency wars to trade wars to shooting wars. Both history and analysis support this thesis.
Currency wars do not exist all the time; they arise under certain conditions and persist until there is either systemic reform or systemic collapse. The conditions that give rise to currency wars are too much debt and too little growth.
In those circumstances, countries try to steal growth from trading partners by cheapening their currencies to promote exports and create export-related jobs.
The problem with currency wars is that they are zero-sum or negative-sum games. It is true that countries can obtain short-term relief by cheapening their currencies, but sooner than later, their trading partners also cheapen their currencies to regain the export advantage.
This process of tit-for-tat devaluations feeds on itself with the pendulum of short-term trade advantage swinging back and forth and no one getting any further ahead.
After a few years, the futility of currency wars becomes apparent, and countries resort to trade wars. This consists of punitive tariffs, export subsidies and nontariff barriers to trade.
The dynamic is the same as in a currency war. The first country to impose tariffs gets a short-term advantage, but retaliation is not long in coming and the initial advantage is eliminated as trading partners impose tariffs in response.
Despite the illusion of short-term advantage, in the long-run everyone is worse off. The original condition of too much debt and too little growth never goes away.
Finally, tensions rise, rival blocs are formed and a shooting war begins. The shooting wars often have a not-so-hidden economic grievance or rationale behind them.
The sequence in the early 20th century began with a currency war that started in Weimar Germany with a hyperinflation (1921–23) and then extended through a French devaluation (1925), a U.K. devaluation (1931), a U.S. devaluation (1933) and another French/U.K. devaluation (1936).
Meanwhile, a global trade war emerged after the Smoot-Hawley tariffs (1930) and comparable tariffs of trading partners of the U.S.
Finally, a shooting war progressed with the Japanese invasion of Manchuria (1931), the Japanese invasion of Beijing and China (1937), the German invasion of Poland (1939) and the Japanese attack on Pearl Harbor (1941).
Eventually, the world was engulfed in the flames of World War II, and the international monetary system came to a complete collapse until the Bretton Woods Conference in 1944.
Is this pattern repressing itself today?
Sadly, the answer appears to be yes. The new currency war began in January 2010 with efforts of the Obama administration to promote U.S. growth with a weak dollar. By August 2011, the U.S. dollar reached an all-time low on the Fed’s broad real index.
Other nations retaliated, and the period of the “cheap dollar” was followed by the “cheap euro” and “cheap yuan” after 2012.
Once again, currency wars proved to be a dead end.
Now the trade wars have begun. On Thursday, July 27, the U.S. Congress passed one of the toughest economic sanctions bills ever against Russia.
This law provided that U.S. companies may not participate in Russian efforts to explore for oil and gas in the Arctic. But it went further and said that even foreign companies that do business with Russia in Arctic exploration will be banned from U.S. markets and U.S. contracts.
These new sanctions pose an existential threat to Russia because depends heavily on oil and gas revenue to propel its economy.
Russia has vowed to retaliate…