Islamabad - Pakistani security forces and tribesmen repelled a suspected US attack by shooting at intruding helicopter gunships in the tribal region bordering Afghanistan, officials said Monday.

The incident occurred late Sunday night in Lowara Mandi village of the North Waziristan tribal district that is believed to be infested with al-Qaeda and Taliban militants.

"Two gunships flew at least a kilometre into Pakistani territory but hails of machine-gun fire by troops and the villagers forced the intruders to turn back," a security official said while insisting on anonymity.

The US choppers did not return fire and flew back to Afghanistan, he added.

New York, Sept. 22: Democratic presidential candaiate Barack Obama has said that the country’s regulatory system needs to be changed to ensure an improved economic performance.

Speaking with CBS’s Steve Kroft, Obama said America’s biggest financial crisis could be blamed on a lot of factors, but the main one appeared to be a badly-managed regulatory system that has not kept pace with the times.

Washington, Sept 22 : Exposure to sweet and pleasant aromas while sleeping can affect your dreams positively, while a bad odour can have a negative impact, according to a new study.

The research has shown that what people smell while sleeping has a huge impact on their dreams.

This is the first valid study that documents the impact of olfactory function on dreams.

During the study, German researchers used specific volatile odorants with a negative or a positive smell ("rotten eggs" versus "roses") for simulating the participants during sleep.

After the participants woke up, the researchers recorded their impressions.

London, Sep 22: Republican presidential candidate John McCain picked the wrong Palin as his running mate, according to a YouTube video that is attracting hits on the Internet.

The presidential candidate should not have chosen Alaska Governor Sarah Palin, but Michael Palin, the former Monty Python star turned travel documentary maker, The Times reported.

New York, Sept. 22: The only way that the crisis on Wall Street can end is through trust and confidence, Republican presidential candidate John McCain has said.

In an interview with CBs’s Scott Pelley, McCain admitted that the American people were facing tough times, but ruled out a repeat of the Great Depression of 1929.

Washington, September 22 : The senior management of the world’s largest corporations have called for greater visibility on climate change related policy in order to better anticipate the impact of regulation driven carbon markets and carbon prices.