Most economic events move currencies temporarily. A bad jobs report weakens the dollar for a week. A surprise rate cut pushes a currency lower for a month. Eventually, conditions normalise, the data improves, and the exchange rate finds its way back to something resembling where it was. Wars and sanctions are different. They do not create temporary dislocations. They create permanent ones. Currencies that existed in one form before a major geopolitical rupture often emerge in a completely different structural position afterwards, and some never recover at all.
How sanctions work as a currency weapon
Sanctions are economic restrictions imposed by one country or a coalition of countries on another, typically in response to military aggression, human rights violations, or the pursuit of weapons programmes. At their most powerful, sanctions cut the targeted country off from the global financial system. They prevent the country's central bank from accessing its foreign currency reserves held abroad. They remove the country's banks from the SWIFT international payment network. They prohibit foreign companies from doing business with the targeted country.
The currency consequences are immediate and severe. When a country cannot access its own reserves and cannot conduct international transactions, demand for its currency collapses. Foreign investors exit. Domestic businesses that need dollars or euros to pay for imports find them unavailable at the official rate. A parallel black market emerges where the real exchange rate diverges dramatically from the official one. The gap between the two rates tells you more about the true state of a sanctioned currency than any official figure.
What happened to the Russian ruble in 2022
The sanctions imposed on Russia following the invasion of Ukraine in February 2022 provide the most comprehensive recent example of how rapidly a currency's structural position can change.
In the first weeks after the invasion, the rouble lost roughly thirty percent of its value against the dollar as foreign investors liquidated Russian assets, and the prospect of being cut off from dollar clearing became real. The Central Bank of Russia responded by raising interest rates to twenty percent, imposing capital controls, and mandating that Russian exporters convert eighty percent of their foreign currency earnings into rubles. The ruble recovered, temporarily, and actually ended 2022 stronger against the dollar than it started.
But the recovery masked a bigger structural change. Russia was no longer a normal participant in global currency markets. Its reserves were frozen. Its banks were cut off from SWIFT. Its currency became non-convertible in practice for most of the world. The ruble that existed before February 2022 and the ruble that existed after were different instruments despite sharing a name. One was a freely traded emerging market currency. The other was a managed domestic currency with limited international use and no reliable price discovery outside Russia's controlled market.
How wars destroy currency credibility even without sanctions
Sanctions require a coalition willing to impose them. Wars destroy currency credibility through a different mechanism that requires no external decision at all.
When a government goes to war, it spends. Military equipment, troop salaries, infrastructure, and reconstruction. The spending usually exceeds what tax revenues can cover, so governments print money to fill the gap. More currency in circulation chasing the same or fewer goods produces inflation. Inflation erodes the purchasing power of the currency. Foreign investors who hold assets in that currency watch their real returns shrink and exit. The exchange rate falls.
Zimbabwe's currency was destroyed not by sanctions but by the costs of military involvement in the Democratic Republic of Congo, combined with domestic political decisions that produced hyperinflation. The Lebanese pound collapsed as government mismanagement and the economic shock of the 2020 Beirut port explosion removed confidence in the state's ability to manage its finances. The Afghan afghani fell sharply when the Taliban takeover in 2021 triggered the immediate freezing of Afghanistan's foreign reserves held in US banks, cutting the new government off from the financial lifeline its predecessor had depended on.
In each case, the currency that emerged from the conflict or political rupture was not the same instrument that entered it. The names were the same. The institutions, the credibility, the international standing, and the exchange rates were permanently altered.
Why these changes tend to be permanent rather than temporary
Currency credibility is built slowly and destroyed quickly. A central bank that has spent twenty years building a reputation for sound monetary policy, low inflation, and reliable reserve management can see that reputation eliminated in months by a war or a sanctions regime that removes its ability to act independently.
Rebuilding that credibility after the conflict ends takes considerably longer than destroying it took. Investors who exited during the conflict do not return immediately when the shooting stops. They wait for evidence that the institutions have been rebuilt, that inflation is under control, and that the legal framework protecting their investments is functioning. That evidence takes years to accumulate. Meanwhile, the exchange rate stays depressed, import costs remain elevated, and economic recovery is slower than it would otherwise be.
Russia is likely to spend years, possibly decades, rebuilding a currency that functions normally in global markets, even if sanctions are eventually eased. The structural damage to correspondent banking relationships, to foreign investor confidence, and to the ruble's role in international trade settlements is not repaired quickly.
What this means for traders watching conflict-affected currencies
The practical implication for traders is that conflict-affected currencies behave differently from currencies under normal economic stress. Normal economic stress produces reversible moves. Conflict and sanctions produce structural breaks where the old equilibrium no longer exists.
Trading a currency that is under active sanctions as though it will mean-revert to its pre-conflict level is one of the more dangerous assumptions in Forex. The pre-conflict level reflected a world that no longer exists. The new equilibrium, wherever it settles, reflects the post-conflict reality, which includes permanent changes to trade flows, reserve access, and investor confidence.
Checking the economic calendar and geopolitical news before entering any position in a currency that is subject to active sanctions or that sits in a conflict zone is essential.
The Gulf's position in a world of shifting currency maps
For traders and businesses based in Dubai, the shifting currency landscape created by conflicts and sanctions creates both risk and opportunity. The UAE has navigated a careful position in the post-2022 sanctions environment, maintaining trade relationships across multiple geopolitical blocs. The dirham's dollar peg provides stability in an environment where many regional currencies have been under significant stress.
But the realignment happening in global trade and currency flows, driven partly by the consequences of the Russia-Ukraine conflict, is producing new currency corridors, new settlement mechanisms, and new pairs that matter in ways they did not before 2022. Traders who understand why wars and sanctions redraw currency maps are better positioned to recognise when a new map is being drawn and to assess what it means for the pairs they trade.
Reading geopolitical developments alongside currency price action. The connection between political events and currency moves is one of the most durable patterns in forex markets, and building the habit of reading both together is one of the more valuable things you can do before real capital is at stake.
