Secretary of State Condoleezza Rice said Pakistan must show "resolve and urgency" as she called Wednesday for international cooperation in the investigation into the Mumbai attacks. Rice arrived in New Delhi as part of a US effort to ease tensions in the region after a three-day terrorist attack killed 171 people in India's financial capital. "I have said that Pakistan needs to act with resolve and urgency, and cooperate fully and transparently," Rice said. "I know too this is a time when cooperation of all parties who have any information is really required." Indian US officials have pointed the finger at Pakistani-based groups in the attacks.