NEW DELHI (AP) — When Prime Minister Narendra Modi swept to power in India's most resounding election victory in decades, he promised to revive the sluggish economy, rein in rising food prices, tackle corruption and overhaul his predecessor's lackluster foreign policy. [...] in recent weeks, critics — and even many supporters — have started to accuse him of squandering his powerful mandate in this boisterous country of 1.3 billion people, where such overwhelming election victories are exceedingly rare. [...] Modi's pledge to clean up the political system has been tainted by the appointment of Amit Shah, a longtime adviser, to a top political post even though he is facing murder charges. Last week, in a speech commemorating India's independence from Britain, he referred to some campaign promises, including accelerating economic reforms, which lifted India's benchmark stock index to a record. [...] after the grand gesture of inviting Pakistan's Sharif to his inauguration, ties between the two countries remain strained, particularly over the disputed northern territory of Kashmir, which the two nations have gone to war over twice. [...] given Modi's loud promises to crack down on the corruption and cronyism associated with the Congress-led government, his decision to name Shah head of the Bharatiya Janata Party appears oddly inconsistent. Accused of ordering the illegal police killing of a small-time criminal and his wife, Shah was arrested and spent three months in jail in 2010. Shah was the main architect of Modi's electoral victory and the two men have worked closely since the 1980s when they were volunteers with the Rashtriya Swayam Sevak Dal, or the National Volunteers Association, a militant Hindu movement and parent organization of the BJP.