'At the very least, India must stay away from the CHOGM to be held in Colombo and, thereby, exert pressure on Sri Lanka to do justice by its hapless, much exploited Tamil minorities', the leader of AIADMK and Chief Minister of Tamil Nadu J Jayalalithaa said in a letter to the Indian Prime Minister Dr Manmohan Singh on Monday.

AIADMK’s rival DMK has equally put up pressure on the Government to boycott the forthcoming CHOGM Summit.

DMK was in the ruling UPA Coalition at the Centre and had to part their ways on account of the Government’s policy towards Sri Lankan Tamils. DMK was insisting that as the Sri Lankan Government did not do much to rehabilitate the Tamil civilian population, who were the victims of 2009 war, India should urge for amending the US resolution on human rights violation and thus make it more stringent for application before it was passed in UNHRC.

The Tamil parties also demanded that the Government table a resolution of human rights violations in Sri Lanka in the Parliament and call for setting up an independent global agency to study the war crimes committed in 2009. But unfortunately none of the things were taken on board.

With polls ahead, the public protests against India’s policy towards Sri Lanka are continuing. The Tamil parties, therefore, have come under pressure. They cannot afford the things to be taken for granted as they did in 2009.

Meanwhile the meeting of the DMK executive, chaired by its chief M Karunanidhi, asked New Delhi to boycott the Commonwealth Heads of Government Meeting to reflect the sentiments of Tamils worldover and to keep up the democratic spirits.

When some countries had decided against attending CHOGM, 'India without any hesitation should announce its decision about boycott immediately,' the DMK meeting said in a resolution.

'...any high level participation or engagement from the Indian side in the CHOGM will not only embolden the Sri Lankan regime but also incense public opinion and sentiment in Tamil Nadu on this very sensitive issue even further', Jayalalithaa said in her strongly-worded letter.

The proposed CHOGM in Colombo is another opportune occasion for India to ratchet up further pressure on Sri Lanka to ensure that accountability is established under an international framework for the 'war crimes and genocide committed in the closing stages of the civil war and the ongoing gross human rights abuses', she said.

'As an emerging great power and an aspirant for a permanent seat in the UN Security Council, India has a duty to ensure that the values of democracy and respect for human rights are upheld anywhere in the world and in particular in its neighbourhood', she said.

Jayalalithaa said India should ask for shifting of the venue to another country and 'if India takes this diplomatic initiative there is likely to be broad based support amongst member countries of the Commonwealth'.

The decision that Sri Lanka would host the next meeting of CHOGM was taken at the last CHOGM meeting in Pert in Australia in October 2011. The resolution for Sri Lanka hosting the next CHOGM meeting was opposed by some countries citing serious human rights violations by Colombo, but India did not join the chorus and rather voted in favour of the resolution.

After 26-years of Tamil insurgency the Sri Lanka's forces brutally cracked down on the LTTE in 2009 and wiped them out uprooting and killing many civilian population.
This action came under the lens of human rights violation in reports by UN agencies and other international organisations.

Sri Lanka’s military action left at least 100,000 people dead, but there are still no confirmed figures for tens of thousands of civilian deaths in the last months of battle: estimates range from 9,000 - 75,000.

One UN investigation said it was possible up to 40,000 people had been killed in the final five months alone. Other human rights groups suggest the number of deaths could be even higher.

Video footage has also emerged appearing to show serious abuses committed by the army.

But the Sri Lankan government released its own estimate last year, concluding that about 9,000 people perished in those few months.

The Sri Lankan government commissioned its own investigation into the war in 2011.

Its Lessons Learnt and Reconciliation Commission (LLRC) cleared the military of allegations that it deliberately attacked civilians. It said that there had been some violations by troops, although only at an individual level.

In November 2012 an internal UN report said that the UN had failed in its mandate to protect civilians in those final months of the civil war.