Having already fallen 12% in 2008, the Russian Ruble is well on is way to fulfilling analysts' predictions that it will fall 30% before stabilizing against the US Dollar. While the credit crisis has not been kind to Russia, the Ruble is suffering more from a collapse in the price of oil, which recently slipped below $50 a barrel. For reference, the government needs the price of oil to stay above $70 in order to balance its budget. Now, the country's current account surplus is eroding almost as quickly as its foreign exchange reserves, which it is deploying in a vain effort to forestall the decline in the Ruble. The response of the Central Bank has been to widen the band within which the currency is permitted to fluctuate; in practice, this is tantamount to defeat, and is sure to trigger a further decline. Bloomberg News reports:

"The central bank is letting it fall because of oil, reserves depletion, all of that," said an emerging-markets currency strategist. "We can probably expect to see more of this."

Read More: Ruble Falls on Speculation Central Bank Scaling Back Defense

Officially, Japan has not intervened in forex markets since 2004, when it spent the equivalent of $300 Billion to hold down the value of the Yen. That impressive streak could soon come to and end, however, as the Yen continues to surge on the unwinding of the carry trade. The performance of the Yen- which recently touched a 13-year high- is particularly impressive since it comes at a time when virtually every other currency has collapsed relative to the US Dollar. Now, analysts have once again taken to pouring over monthly data on Japan's Central Banking activities, in order to confirm that it is keeping its finger off of the trigger. Given that the Yen's appreciation has already prompted several high-level meetings among global economic and political leaders, however, it is probably only a matter of time before Japan ends its multi-year abstinence from forex. Reuters reports:

Japanese Finance Minister said earlier this month that the authorities must be ready to deal with big swings in markets as they are undesirable. His comments pushed the yen lower against the dollar as market players were wary of intervention.

Read More: Japan did not intervene in currency market in Nov

At this point, it should be clear to everyone that the ongoing Dollar Rally is due more to technical factors than US economic strength. In short, the Greenback is benefiting from the intertwined trends of risk aversion, capital flight from emerging markets, unwinding of carry trade positions, and the perception that the US is a safe haven to invest during periods of global economic uncertainty.

If this is indeed the case, shouldn't the Dollar rally eventually come to an end? Based on economic fundamentals, the answer is a resounding 'yes.' The twin deficits of trade and government spending are unlikely to abate as a result of the credit crisis. In fact, the trillions of dollars in fresh government spending, combined with a decline in exports wrought by the suddenly strong Dollar, will probably exacerbate these dual trends. Based on almost every measure, the US economy remains dangerously over-leveraged. Fueled by cheap credit, household debt, government debt, and financial sector debt have exploded over the last couple decades, such that total US debt is estimated at a whopping %350 of GDP. Given that both China and the Middle East are facing domestic economic crises brought on by a drop in exports and a decline in the price of oil, respectively, it seems unlikely that they will have the resources, let alone the inclination, to continue to fund this debt. Seeking Alpha reports:

Chinese have recently lowered interest rates considerably, have started large domestic stimulus packages and have even tried to depreciate their currency. Again, one should anticipate a much lower appetite for U.S. assets going forward.

Read More: Will the Dollar Rally Survive?

Since China revalued the Yuan in July 2005, it was considered a foregone conclusion that the currency would continue appreciating at a steady clip. The global credit crisis, generally, and the Chinese economic downturn, specifically, has turned that assumption on its head. Last week, the RMB declined by the biggest margin since the revaluation, prompting speculation that China will adopt a currency policy diametrically opposed to that which it has pursued over the last few years. The move also coincided with the annual China-US trade summit, attended by none other than Treasury Secretary Henry Paulson. The new consensus among currency traders (proxied by futures contracts) is that the Yuan will depreciate slightly over the next two years, as China moves to provide a boost to its export sector. Given that the currencies of most of China's Asian neighbors have fallen by double digits over the last year, the Yuan may have to fall sharply in order to maintain competitiveness. The Wall Street Journal reports:

the Chinese currency hasn't experienced a large devaluation in at least a decade. Such a move would go against the realities of geopolitics and against signals that Beijing is more focused on boosting domestic consumption than on stimulating exports.

Read More: Will China Finally Try Wielding Its Yuan?

What does the appointment of New York Federal Reserve President Timothy Geithner as Treasury Secretary mean to forex traders? To answer this question, it depends on which side of the Dollar you fall in. Geithner worked in the Treasury Department under Bill Clinton, which means he is well versed in the Strong Dollar policy. It is not clear whether such a policy will be implemented under the Obama administration, which may be counting on the export sector to fill the gap created by a decline in domestic consumption. Regardless, the consensus among analysts is that Geithner understands currency markets, and is not likely to take steps that will rattle them. This would mark a sharp break from his predecessor Henry Paulson, whose bungling of the economic bailout has given rise to record levels of volatility (read: uncertainty) in forex and financial markets. The Australian reports:

"For all the currency traders out there, this means he was in charge of US dollar policy and is steeped in the nuance of the currency markets...Unlike during rookies Paul O'Neill or John Snow's tenure, we won't get many mistakes to make easy money," said [one analyst].

Read More: 'Safe pair of hands' Timothy Geithner tipped for US Treasury

The economic situation in Indonesia is similiar to that of several other emerging market economies, characterized by falling export revenue, shrinking government coffers, and capital flight. The consequent decline in the Indonesia Rupiah has almost become self-fulfilling. In other words, as skittish investors rush to move their capital out of Indonesia for fear of complete collapse, they are simultaneously making such a collapse more likely. Indonesian policy-makers are conscious of this tendency of nervousness to feed back into itself, and are delicately trying to avoid shocking the markets. On the one hand, they want to limit the decline of the Rupiah. On the other hand, they don't want to take actions that will make investors nervous, even if it means making it more difficult for them to short the currency. The International Herald Tribune reports:

Last week, Indonesia changed its currency rules to make it more difficult to buy foreign exchange. The measures, mostly affecting Indonesians rather than foreigners, would make speculative bets against rupiah depreciation more difficult.

Read More: Indonesia undergoing currency crisis

The European Union has unveiled an economic stimulus package to match the US, as the two economies continue to mirror each other's strategies for fighting the credit crisis. Given the evident lack of effectiveness of the US plan, it is no surprise that analysts reacted pessimistically to the policy proposal. At this point, investors and consumers alike appear resigned to the inevitability of economic recession in both economies. In other words, there isn't much that government can achieve, as their respective efforts will certainly be undermined by increased saving. Besides, investors (including currency traders) remain focused on the financial aspects of the credit crisis, rather than the economic aspects. Accordingly, the theme of risk aversion continues to dominate, as part of a trend that favors the Dollar. Reuters reports:

Analysts said that the plan marked a step in the right direction, but uncertainty about its efficacy, and general concerns about a deep slowdown in the global economy were keeping investors in the mood to sell risky assets.

Read More: EU stimulus package raises concerns

The Treasury Department's most recent attempt to stabilize credit markets involves an injection of $800 Billion into the banking sector. According to one estimate, the total amount of Federal money committed so far (in the form of investments, guarantees, and loans) now exceeds $7 Trillion, and shows no signs of abating. In theory, the possibility exists that such investments could prove profitable, in which case the bailout wouldn't end up costing taxpayers a cent. In all likelihood however, a significant portion of these investments will have to be written off, causing a net increase of trillions of dollars to the money supply. In the long-term, this is certain to be highly inflationary. It seems currency traders have finally begun to take note of this inevitability, and the Dollar rally has stalled accordingly. The New York Times reports:

The Federal Reserve and the Treasury... [are] sending a message that they would print as much money as needed to revive the nation’s crippled banking system.

Read More: U.S. Details $800 Billion Loan Plans

Having endured years of abuse from free-market advocates and the International Monetary Fund, fixed exchange rate regimes are officially back in vogue. This is because the sole currencies not to have been affected by the recent surge in forex volatility are those that are pegged to the US Dollar, namely the Chinese Yuan and Hong Kong Dollar. Both countries have stood by calmly as other emerging market economies have witnessed speculators lay waste to their currencies, driving them down by 5% or more per day. Fortunately, both HK and China have significant stockpiles of foreign exchange reserves, which virtually eliminates any possibility of a speculative attack. Iceland, meanwhile, was forced to abandon a half-hearted attempt at a currency peg when it ran out of cash to defend it. Of course, a fixed currency can also be a disadvantage, as exports may become expensive relative to competitors that experience declines in their currencies. Given the current economic climate, however, it seems HK is happy to give up this potential upside in favor of stability. The Wall Street Journal reports:

Like Japan, Hong Kong was a source of funds for the carry-trade. Turbulent markets have taken that strategy apart, and investors who borrowed in Hong Kong are pulling money back into the territory at a rapid clip.

Read More: Hong Kong Loves Its Currency Peg

The last few months have born witness to an unprecedented level of volatility in forex markets, to say nothing of the fluctuations in other areas of securities markets. Emerging markets currencies in particular, as well as a handful of industrialized currencies, have crashed violently, as a process of de-leveraging continues to send capital back to the US and Japan. This instability has led some policy-makers to revive an erstwhile exhortation to limit the role of speculators in forex markets, who collectively may account for as much as 90% of daily forex turnover. Specifically, a 1% tax on all forex trades has been proposed, which would be deducted automatically and used to finance infrastructure projects around the world. It has also been suggested that forex markets follow the lead of equity markets by adopting a so-called "up-tick" rule, which would be used to counter sudden waves of predatory short-selling that can cripple a country's currency in minutes. CSRwire reports:

Such bear raids are rarely to "discipline" a country's policies, as traders claim, but rather to make quick profits. In the transparent FXTRS system, traders selling falling currencies begin to see that the rising tax is cascading into the country's currency stabilization fund and cutting into their gains.

Read More: Why Obama Missed Bretton Woods II