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Four years after Pakistani gunmen laid siege to India's financial capital of Mumbai, South Asia's two nuclear-armed neighbors are meeting again on the cricket ground, marking a gradual thaw in their decades-old rivalry.

The first bilateral series between India and Pakistan since November 2007, comprising two Twenty20 matches and three one-day internationals, begins on Christmas Day with a T20 match in the southern Indian city of Bangalore.

Analysts see the cricket series as a sign the two sides are ready to move past the enmity that followed the 2008 Mumbai terror attacks, when 10 Pakistan-based gunmen killed 166 people in a three-day rampage across the city.

India blamed the Lashkar-e-Taiba militant group for the attacks and demanded that Islamabad crack down on terrorism.

Despite a long history of mutual distrust and animosity, the love of cricket — bequeathed to India and Pakistan by South Asia's British colonial rulers — is one of the few things that the two countries agree upon.

Relations have improved since the Mumbai attacks and diplomatic ties have been renewed, but New Delhi remains unsatisfied with the slow pace of Islamabad's efforts to bring the perpetrators of the attacks to justice.

New Delhi froze nearly all contact with Islamabad — including sporting ties — after the Mumbai attacks, a hiatus that has been bridged in recent years by India and Pakistan playing matches in third countries or in international meets such as the World Cup.

In the years since the Mumbai attacks, some efforts have been made to bring bilateral relations out of the deep freeze. Direct trade has been increasing steadily and both countries have made efforts to increase trade across their land border.

At the Wagah-Attari land border in Punjab, India has opened a huge customs depot and warehouses that can handle more than 600 trucks a day from Pakistan. Two-way trade direct between India and Pakistan totals around $2 billion, but a large chunk of the trade is channeled through Dubai, Hong Kong or Singapore.

Earlier this month, India and Pakistan signed an agreement that makes it easier for business travelers to get visas. People aged over 65 also will be entitled to get visas "on arrival." Members of families divided during Britain's partition of the subcontinent, along with tourists and religious pilgrims, are also supposed to get quick visas.

"When Indians enter Pakistan and when Pakistanis enter India, they should feel like they are coming home," Rehman Malik, Pakistan's interior minister, said during a visit to New Delhi two weeks ago when the two sides signed the visa agreement. India has issued more than 3,000 visas to Pakistanis for the cricket matches.

But analysts caution that policy makers in India should not get carried away by the 'friendly neighbor' rhetoric.

"All forms of people-to-people contact, including sports, are important and should be pursued, but never at the cost of our main focus, which is terrorism emanating from Pakistan," said Vivek Katju, a retired diplomat who has served in Pakistan and was India's ambassador in Afghanistan.

Across the border, Pakistani analysts feel that while the resumption of sporting contact between the two neighbors is welcome, the two sides can make real progress only when they succeed in resolving their long-standing disputes.

Rasool Bakhsh Rais, a professor of political science at the Lahore University of Management Sciences in Pakistan, said sports could be a "major avenue through which hostilities between the two nations could be set aside."

The expectations riding on cricket players are huge before any match, but especially when they play against their great rivals. So great are the pressures, a sports psychologist is accompanying the Pakistani team during its stint in India, Pakistani cricket officials said.

Security has been tightened at Bangalore's Chinnaswamy Stadium, where Tuesday's match is to be played, with hundreds of paramilitary troops and local police deployed at the gates to the stadium.