"At this point, they've just decided to throw caution to the wind," says TIME New Delhi correspondent Tim McGirk of India's attempt to elbow its way into the nuclear club. "They're saying, 'Enough of this shilly-shallying around -- we've done the test, and we're going to build up our arsenal.'"
While such news is meant to impress the Big Five -- America, Russia, Britain, France and China -- it won't go down well in Islamabad, where Pakistan's parliament and cabinet are at loggerheads over whether to test their own device. "The Pakistanis are saying to the West: Try and stop us from doing this," says McGirk. Now that India has effectively broadcast its ability to wipe out their capital, stopping them just got a whole lot harder. Listen for more loud bangs soon.