The worst financial crisis in 80 years has forced countries to work together to find ways to help shore up a financial system crippled by banks fearful of lending to each other.

But with evidence mounting that Europe is already in recession, analysts fear that cooperation in shoring up banking systems could be threatened as governments begin to turn their attention to reviving domestic demand.

Governments have pledged around $4 trillion to support banks and restart money markets to try to stem the crisis and are considering tougher financial rules to guard against any repeat.

In the Gulf, finance ministers and central bank governors said at a meeting on co-ordinating policy that they would look at directing more government funds into banks and regional stock markets, Al-Arabiya television reported.

Saudi Arabia, the United Arab Emirates and four other Gulf states have so far adopted separate responses to ease the pressures of the liquidity crunch on their banking sectors.

Qatar's finance minister, Youssef Kamal, said the crisis would give impetus to create a regional monetary union and he was sure the measures taken to protect the economies were sufficient.

Gulf states would "reassess" their foreign investment policies, discuss ways to strengthen the role of government in the financial sector, ensure the stability of the global oil market and debate how Gulf states could encourage intra-regional investments, according to the agenda of the meeting in Riyadh.

Any significant redirection of Gulf investment to domestic markets could be a concern for banks and other firms in the West which have eyed the huge sums in the region's state-run sovereign wealth funds as a potential source of capital while European and US credit and share markets are seized up.

But the scarcity of private sector capital is being felt in the Gulf and officials were set to discuss the risk of foreign investments from countries hit by the crisis being 'liquidated'. Saudi Arabian stocks plummeted 8.7 per cent on fears of an oil price fall and recession.

It followed a sell-off in stocks from Tokyo to New York on Friday after private sector activity in the euro zone's economy contracted at the fastest pace in at least a decade and data showed Britain's economy shrank 0.5 per cent in the third quarter - much worse than economists expected.

"The danger of a collapse (on financial markets) is far from over. Any all-clear would be wrong," German Finance Minister Peer Steinbrueck said in an interview released yesterday.

"We are still in a dangerous situation," he told Bild am Sonntag newspaper.

Volatility has surged across financial markets and was particularly violent in foreign exchange trading on Friday, with a swathe of major and emerging market currencies sold aggressively in favour of the US dollar and the Japanese yen.

Russian officials pledged yesterday to prevent sharp fluctuations in the rouble, but said there was no need to limit capital movements or change the trading corridor of the currency, which hit two-year lows versus the dollar last week.

Russia runs a managed float of the rouble against a currency basket and the central bank has spent billions of dollars of its reserves - the third largest in the world - to keep the rouble's rate within a fixed corridor.

"Just because the global financial crisis has hit our shores, does not mean that the rouble has to be significantly devalued," Alexei Ulyukaev, the first deputy chairman of the central bank, said in comments broadcast on Ekho Moskvy radio.

Emerging economies have been particularly hard hit by the crisis, forcing many to plunder their foreign exchange reserves to defend their currencies and financial systems.

Officials in Washington said those economies that qualify for a proposed new liquidity fund at the International Monetary Fund could be eligible for an unusually high level of funding.

Although the details of the package were not finalised, the plan, which may offer countries up to five times their IMF quota, could be approved as soon as this week.

It would allow certain emerging market economies to exchange local currencies for US dollars to ease short-term credit strains, the officials said.