Monday India celebrates Republic Day - and worries neighbors, especially Pakistan. NEW DELHI – Every Republic Day, India struts its military stuff, dragging out the latest ballistic missiles and tanks and parading the finest soldiers on the subcontinent. But Monday, on this year's anniversary, India has a bit more to strut about. Just five years after US-imposed sanctions turned India and Pakistan into virtual pariah states for their nuclear-weapons tests in 1998, India has emerged as America's "strategic partner" in South Asia. Far more than its alliance with Pakistan to hunt down Al Qaeda and Taliban remnants, America's new relationship...