Writing in his party organ "Murasoli", Karunanidhi alleged that Sri Lanka did not have any trait characteristic of a friendly nation.
"The Central government must understand this at least now and take resolute steps to get the 13th Amendment implemented in Sri Lanka," he said.
Tracing failed attempts to bring peace and equal opportunity for Tamils in Sri Lanka by India, and acts of "betrayal" by Lankan leaders, the DMK chief cited several historic events including the 1987 Indo-Lanka accord to buttress his charge that Sinhalese had unilaterally broken all accords with India.
Karunanidhi had yesterday demanded that India not participate in the Commonwealth Heads of Government Meet in Colombo in this November and warned of protests and hoisting of black flags state-wide if its demand was not acceded to by the Centre.
He wanted Prime Minister Manmohan Singh to clearly convey to Sri Lankan External Affairs Minister G L Peiris during his visit today that India would not take part in the meet.