A senior US defence official sought Tuesday to soothe India's concerns about US weapons supplies to arch-rival Pakistan. US Undersecretary for Defence Michelle Flournoy told reporters in New Delhi that Washington was clearly observing how these arms were being used by Pakistan. The United States is mindful of these concerns as we take steps to support the equipping of Pakistan for the current counter-insurgency and counter-terrorism purposes, she said at the end of a two-day trip to India. Indian Defence Minister A.K. Antony said last month that the scale of US military assistance to Pakistan was disproportionate to the war on terror for which it was intended.