Indian Navy acts finally to save TN fishermen

I read a news item that  Indian Navy saved a large group of Tamilnadu fishermen when they were allegedly chased by Sri Lankan Navy .It is reported the fishermen were just close to the International Maritime boundary (IMBL).But they were chased by the Sri Lankan Navy.I have wondered many times ,when Sri Lankan Navy is able to chase and arrest Indian fishermen straying in to their waters,why was there no presence of Indian Navy near the IMBL ?.This would have served the twin purpose of preventing Indian fishermen from straying in to Sri Lankan waters and also would have provided the needed succour to Indian fishermen.It is reported, seeing the Indian Navy,the Sri Lankan navy retreated. The fishermen were obviously happy and had a good catch ,it seems.After 500 to 600 Tamilnadu fishermen have lost their lives and a change of guard at the Tamil nadu government,the Indian Navy has finally asserted itself.This should have been done long ago.It was believed the fishermen's issue also contributed to the rout of DMK and Congress in the recent  elections to Tamilnadu assembly.Has the election results prompted the central government to act ?Anyway,all is well,that ends well. One hopes,this exercise by Indian Navy is not an one off affair.This protection should be extended until normalcy returns and Indian fishermen may no longer have to face any threats from Sri Lankan Navy .Indian fishermen should also ensure they do not cross the IMBL and there ae no breaches from their side.