Asian central banks are increasingly facing currency pressures originating outside their borders.

From South Korea to India and the Philippines, policymakers have ramped up efforts to curb offshore forex speculation as high oil prices, foreign fund exodus and a strong dollar pressure regional currencies.

South Korea¡¯s finance ministry said on Sunday it will step up oversight of offshore currency derivatives. The Philippines has asked banks to ensure non-deliverable forward contracts are limited to economic purposes, while India has tightened limits on banks¡¯ net open position to $100 million.