Finance Minister Pranab Mukherjee today said, the surge in crude oil prices is a disturbing trend. Speaking to reporters in New Delhi, Mr Mukherjee said, it is too early to say what will be its impact on the economy.The crude oil prices in the international market surged recently following tensions between Iran and the West over Teheran's controversial nuclear programme. Meanwhile, Petroleum Minister S Jaipal Reddy has said that India is not facing any external pressure on buying crude oil from Iran. He said, India will abide by UN sanctions only and not those imposed by any bloc of nations. Mr Reddy said, India has cordial relations with Iran and will continue to import oil from the country.