Myanmar said it would float its currency, effective Sunday, a long-sought policy change that is expected to make the resource-rich Southeast Asian country more inviting to foreign investors following decades of pariah-nation status.

WSJ: Myanmar Announces Currency Reform

Foreign-exchange intervention to lower a currency is far more effective than intervention to support one.

ECONOMIST: The yen

But we've seen the kind of behind-the-scenes discussions and negotiations have been very effective in encouraging China to strengthen their currency.

WHITEHOUSE: Briefing by Deputy Press Secretary Josh Earnest

It did nothing effective to show Russia how to stabilize its currency.

FORBES: Fact and Comment

The Nikkei Currency Index series plots changes in the effective exchange rate against a base value of 100 for the value in 2005.

FORBES: Is Smart Money Betting on a Weaker Yen?

The whole Eurozone problem is that each Eurozone country was issuing bonds in what was effectively a foreign currency, and so it lacked an effective lender of last resort.

FORBES: Eurozone Leaders: Now They're Making the Crisis Worse Through Stupidity

While these policies - clamping down on loans, currency appreciation and interest rate rises - have been effective inflation fighting tactics, they have proven to be a drag on growth for the corporate sector.

BBC: Viewpoint: Will Asia see further price growth in 2012?

In retrospect, the actions of the SNB are partially responsible for the continued rise of the yen, as investors and speculators were unable to pour into the Swiss currency- safe haven, seeking appreciation due to the effective peg to the euro.

FORBES: Yen Pin

Earlier this year, the government launched a new dollar auction system, which complements existing state-run currency channels, in a bid to pump more hard currency into the private sector, but economists have so far questioned how effective the mechanism will be in satisfying demand.

WSJ: Venezuelan President Nicol��s Maduro Reshuffles Cabinet