Asian markets sank on Wednesday, extending the previous day's losses, with energy firms tracking a sell-off in commodities and technology firms facing further struggles.
The losses followed sharp drops across Europe and New York as Britain struggles to hammer out a Brexit deal with the European Union and traders remain cautious about US lawmakers' ability to push through tax cut measures.
A rally in global equity markets has run into headwinds in recent weeks as dealers wind down for the end of the year and the US probe into Russia's alleged election meddling sows uncertainty.
A key drag for Asia on Wednesday were copper prices, which sank more than four percent in London, having already lost about 10 percent over the previous week with analysts blaming a pick-up in the dollar on hopes for US tax cuts.
There are also worries about China's crackdown on borrowing-fuelled investing.
"The sentiment in China has turned less positive after the conclusion of the National Party Congress, as the deleveraging rhetoric has returned to the market, especially with regards to real estate speculation," TD Securities commodity strategist Ryan McKay told Bloomberg News.
"Worries of the deleveraging's impact on real estate and construction demand saw optimism for commodity demand reduced and prices retreat."
Also, oil prices were hit by data showing a big rise in US inventories.
Sydney-listed miners Rio Tinto and BHP were all both down around two percent, while energy giant Woodside Petroleum lost 0.2 percent. CNOOC, Sinopec and PetroChina sank in Hong Kong while Inpex suffered a 1.7 percent drop in Tokyo.
- Sterling struggles -
The losses hit wider markets. Tokyo ended the morning 0.9 percent lower.
Hong Kong lost 0.6 percent, leaving it more than five percent off its 10-year peak touched just over a fortnight ago.
Shanghai also slipped 0.6 percent and Sydney was 0.2 percent lower following weaker-than-forecast economic growth data, which also dragged the Australian dollar on expectations the country's central bank will not lift interest rates any time soon.
Singapore and Seoul both gave up 0.5 percent, while Taipei shed more than one percent and Wellington dropped 0.3 percent.
Greg McKenna, chief market strategist at AxiTrader, said since the US tax cuts look set to be agreed, the fall in prices could be caused by a so-called "buying the rumour, sell the (almost) fact", mixed with profit-taking following a healthy run-up this year.
The tech sector, which has been the best performer this year, was again in the red on profit-taking and as dealers shifted to firms more likely to benefit from lower US taxes.
Tencent dived one percent and AAC technologies was four percent lower, with Samsung and Sony also taking a hard hit.
On currency markets the pound is in trouble with British-EU talks in limbo after the government's coalition partner dismissed Prime Minister Theresa May's position on the future of Northern Ireland's border with eurozone member Ireland.
May is expected in Brussels again this week to try to get an agreement that would let her move the talks on to trade.
Eyes are on Washington this week, where lawmakers must agree a fresh budget by Friday to avoid a painful government shutdown, while US jobs data is also due on same day.
- Key figures around 0300 GMT -
Tokyo - Nikkei 225: DOWN 0.9 percent at 22,419.88 (break)
Hong Kong - Hang Seng: DOWN 0.6 percent at 28,662.62
Shanghai - Composite: DOWN 0.6 percent at 3,284.10
Euro/dollar: DOWN at $1.1825 from $1.1826 at 2215 GMT
Pound/dollar: DOWN at $1.3432 from $1.3441
Dollar/yen: DOWN at 112.43 yen from 112.57 yen
Oil - West Texas Intermediate: DOWN 26 cents at $57.36
Oil - Brent North Sea: DOWN 27 cents at $62.59 per barrel
New York - DOW: DOWN 0.5 percent at 24,180.64 (close)
London - FTSE 100: 0.2 percent at 7,327.50 (close)