Prominent Commonwealth countries pressured India Friday to ensure Prime Minister Manmohan Singh participates in the CHOGM summit in Sri Lanka this month but Colombo's reluctance to address New Delhi's concerns about Tamils in that country may have constrained the UPA government.
Colombo's stance, it is learnt, was discussed at the Congress Core Group meeting Wednesday. The sticking points include key demands made by India, including implementation of the 13th amendment of the Sri Lankan constitution for equal rights to Tamil citizens.
With the Tamil Nadu Assembly passing a resolution for boycotting the summit and even Congress MPs from the state urging the PM not to attend, the Congress leadership is in a dilemma as this could snowball into a major issue in Tamil Nadu with general elections round the corner.
While no decision on the PM's visit has been taken yet, sources said it would have made the job easier for the UPA government had Sri Lanka shown any inclination to meet India's demands even half-way.