Malaysian Prime Minister Mahathir Mohamad has suggested that East Asia should consider a common trading currency backed by gold, saying the current foreign exchange system tied to the US dollar was prone to manipulation.

The Malaysian leader said the currency could be used for regional trade and would not be used for domestic transactions.

"In the Far East if you want to come together, we should start with a common trading currency, not to be used locally but for the purpose of settling of trade," Mahathir said at the Future of Asia conference in Tokyo.

"At the moment we have to depend upon the US dollar but the US dollar is also not stable. So the currency that we propose should be based on gold because gold is much more stable," he said.

Read more: US dollar on its way out as world's lead currency?

Mahathir's suggestion came just days after the Trump administration named Malaysia among nine countries that need "close scrutiny" as a potential currency manipulator.

"While Mahathir's latest call for some kind of gold backed payments system is more thoughtful and sincere than most such suggestions, it's more political than economic," Adrian Ash, director of research at investment firm BullionVault, told DW. "He has raised the idea of pegging currencies to gold — rather than to the dollar, like he did to help Malaysia recover from the late 1990s' Asian Crisis — as a challenge to US hegemony."

Ash points out that given Malaysia's stable economy, there is no urgent economic reason to try and boost confidence in the Malaysian currency, nor other East Asian currencies.

Pegging a currency to gold increases confidence in that currency as it means a government cannot inflate its debt away by simply printing more money, because unlike currency or debt, gold cannot be created or destroyed at will, Ash said.

A gold advocate

It's not the first time that Mahathir, a known critic of the existing currency exchange system, has advocated a role for gold in the payment system.

During his previous 22-year term as prime minister, he mooted the idea of some kind of gold-backing for the ringgit, the Malaysian currency. He even endorsed the reintroduction of gold coins — a suggestion that resulted in the issue of a new gold coin in the Malaysian state of Kelantan in 2006, modelled on the traditional gold dinar widely used in Islamic world for several centuries.

"The idea of independently floating fiat currencies is not as popular in Asia as it is in the US," author and economist Nathan Lewis told DW. "Asian countries are not as fascinated by the idea of managing the domestic macroeconomy through currency distortion. They tend to follow the idea of a currency that is stable, predictable, neutral and free of human influence, as a foundation for commerce."

Mahathir's latest idea is not much different from the gold standard established at Bretton Woods in 1944 under which all currencies were linked to the dollar and the dollar was linked to gold. The gold-pegged system ended in 1971 when then US President Richard Nixon severed the link between the dollar to protect America's shrinking gold reserves.

US President Donald Trump praised gold standard on his campaign trail in 2016.

"Bringing back the gold standard would be very hard to do, but boy, would it be wonderful," he said back then.

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'Weaponization' of dollar

Despite the US's enormous debt and its president's utter disregard for international conventions and norms, the dollar has maintained its status as the preferred repository for world savings. More than half of global currency reserves and trade is in dollar.

The dollar's potency has helped amplify the impact of trade sanctions slapped by President Trump on countries such as Iran and Venezuela. The European Union and countries such as China have been advocating an alternative reserve currency system for years but finding a replacement to dollar has not been easy.

Read more: EU plan to sidestep Iran sanctions: How will it work?

The euro — which makes up 20% of total reserves remains the dollar's most formidable challenger. But it has been bogged down by stability concerns and a series of crises within the 19-member eurozone.

Experts say a gold-pegged common currency in East Asia would help the region break away from the dollar's dominance.

"Look at other nations hoarding gold or using it to raise finance — Russia or Venezuela today, previously Gaddafi's Libya. These countries face sanctions or attack by the US," Ash said. "Moving to gold is a way of moving outside Washington's influence because you fear it will dislike your policies and act against you."

Difficult proposition

Still the reach and power of the dollar makes a worldwide return to the gold standard a difficult proposition. It would also not be easy for Western central banks, which have kept interest rates low to stave off recession and boost growth, to reverse course and maintain the kind of strong interest rates needed to support a promise to redeem currency for gold.

Even implementing it across East Asia, as suggested by Mahathir, could be challenging.

"It is less clear if the rest of the region would share his (Mahathir's) thinking," Shankaran Nambiar, a senior research fellow at the Malaysian Institute of Economic Research, told DW. "Although the US might be a superpower on the decline, it is still a superpower to reckon with."