For years India has always looked west to Pakistan when bombs exploded in its cities, powerless to influence its old foe.

A rapid action force soldier looks out from his truck during a curfew in Jaipur May 15, 2008. REUTERS/Punit ParanjpeNow, it is talking peace with Pakistan, and casting aspersions eastwards to Bangladesh, a country it helped establish and should have much more leverage over.

Isn’t it time for some serious diplomacy, to improve relations with Bangladesh and work together to combat violent Islamist extremism?

While homegrown Indian Islamists may have carried out the attack in Jaipur, and a previously unknown group calling itself the Indian Mujahideen has claimed responsibility, initial investigations have also thrown up a possible link to Bangladesh .

Police have released a sketch of a man in his mid-20s who was seen near the site of one of the bombings, who was apparently speaking Bengali. Dozens of Bangladeshi migrant workers have also been rounded up for questioning.