Its clearly a handy work of HAND with following strategic objectives:
Divert peoples attention from Shameful episode of buying MPs to remain in power. Diver peoples attention from price rise, inflation and debacles in foreign policy. Divert peoples attention from amateur and arrogant handling of nuclear agreement. Puncture Left and NDA campaign against nuclear deal by shifting the agenda. Last but most important-to steal national security issues from BJP in the next election by returning the blame. It is clear from the choice of Blasts in BJP ruled states-with a special target on Narendra Modi constituency. Its undoubtadly a HANDY Work of HAND