Malaysia's ongoing currency crash has many causes: a worsening global outlook, plunging commodity prices and, of course, the political scandal enveloping Prime Minister Najib Razak.

But the real culprit is the year 1997. The conventional wisdom is that Malaysia's then leader, Tun Dr Mahathir Mohamad, saved the country from the worst ravages of the Asian financial crisis when he imposed capital controls, pegged the ringgit and waged verbal war against speculators.

But events today show why, 18 years later, Malaysia may wind up the biggest loser in the region.

Malaysia's neighbours recovered by improving transparency, strengthening their financial systems, and limiting collusion between public and private sectors.

Such urgency never swept Malaysia, where the ruling coalition has held power for almost six decades.

Improvements in Malaysian corporate governance have been slow and uneven. Hopes for an end to 46 years of affirmative action - which benefits the Malay majority while sapping productivity and repelling foreign investors - have been for naught.

Efforts to weed out corruption and ween the economy off energy exports have been tepid.

Today's economic troubles are the product of that complacency.

Had the Malaysian government worked harder to strengthen economic fundamentals and win the trust of global investors, Datuk Seri Najib's scandal might not be sending the ringgit to its lowest level in 17 years.

Had officials in Putrajaya, the country's administrative capital, done more to internationalise Malaysia's business culture, foreign investors wouldn't now be rushing for the door.

The FTSE Bursa Malaysia KLCI Index has fallen more than 11 per cent from its April 21 peak, while official foreign-exchange reserves dropped below US$100 billion (S$138.4 billion) for the first time since 2010.

As has been reported, Mr Najib faces questions about US$700 million that allegedly moved through government agencies and state-linked companies to accounts bearing his name.

Mr Najib denies it, while Malaysia's anti-graft commission says it was a "donation". But foreign investors' mistrust of the Malaysian government traces back to policies pursued over the past 18 years.

Perhaps the most notorious was Dr Mahathir's September 1998 decision to sack deputy prime minister and finance minister Anwar Ibrahim.

After months of sparring with Anwar over post-crisis reforms, Dr Mahathir fired him and named himself finance minister, an awkward centralisation of power that persists today and enabled Mr Najib to create and oversee scandal-plagued state investment company 1Malaysia Development Berhad. And when Mr Najib recently fired deputy prime minister Muhyiddin Yassin, who had been demanding answers from the Prime Minister, it seemed like history repeating itself.

Just as in 1997 and 1998, the government is more concerned with closing ranks than retooling the economy.

Indonesia, South Korea and Thailand are also having their share of troubles as China wobbles and the Federal Reserve prepares to hike interest rates.

But Malaysia's accelerating capital flight is particularly worrying.

Malaysia's central bank appears to be struggling to slow the ringgit's 18 per cent plunge over the past 12 months. The currency is now at its lowest since Anwar's departure in September 1998.

That makes for an inauspicious economic bookend: Dr Mahathir is now among those suggesting that Malaysia peg the ringgit anew.

There's certainly less stigma attached to such policies than there once was.

In 1998, the International Monetary Fund called Malaysia's peg a "retrograde step".

By December 2002, the IMF was terming it a "stability anchor".

But the mere mention of another peg suggests that Malaysia's political establishment is still more concerned with the symptoms of the country's problems than the underlying causes.

The ringgit isn't sliding because speculators are attacking it.

Malaysian assets are suffering because the government failed to do basic economic maintenance - in part because it avoided the worst of 1997 and 1998 in ways Bangkok, Jakarta and Seoul couldn't.

As that dawns on investors, the pressure to sell will intensify. Overseas ownership of Malaysian government and corporate debt fell 2.4 per cent last month as a sense of crisis began to permeate the air.

Malaysia isn't about to collapse.

With its moderate growth and the highly respected Dr Zeti Akhtar Aziz helming the central bank, meltdown risks are limited.

But Malaysian officials are wrong to argue that the ringgit's slide doesn't reflect underlying fundamentals. It does indeed, and that's the real problem - one that can be traced back to 1997.

BLOOMBERG VIEW