The global economy has become extremely interconnected and a currency crisis in one part of the world can have a ripple effect for other economies as well. This is especially the case for the US as it is the largest importer of goods and is also the largest foreign investor.
Let’s take the example of the South East Asian currency crisis of 1997 to understand this issue. Thailand had pegged it currency to the Dollar at 25 Bahts. This was backed by a sovereign guarantee. The Thai government’s objective in pegging the currency was to eliminate the foreign exchange risk for investors, so that they could bring in money, invest make profits and repatriate without risk.
While this worked well for a while after sometime it was realized that due to massive inflows of foreign funds, the Thai economy had become highly overleveraged. Large amounts of money had gone into real estate speculation and local banks had accumulated huge bad debts. At the same time the Thai government followed an independent monetary policy and did not manage its inflation rate unlike Hong Kong, which follows a currency-board and has fixed its currency’s exchange rate to the USD and also follows a rigid monetary policy in line with the US monetary policy.
Quite apparently, high inflation means that the value of the local currency is depreciating faster than the USD and the exchange rate holds no meaning. Foreign investors, lenders and speculators sensed this and started pulling out their investments. George Soros, being one of the biggest speculators blew the whistle and the rest is history. With so much of demand for the Dollar vis a vis the Baht, the government was likely to run out of its Dollar reserves. It was left with no option but to allow the Baht to depreciate. Its value fell from 25 to the Dollar to 50 to the Dollar.
For foreign investors, the value of their holdings depreciated rapidly. For the local Thais, imports became expensive and the prices of imported products doubled. For importers of Thai products, the prices halved. Thus drastic fluctuations in currency values can change equations considerably.