Reuters: Islamist charities, some with suspected ties to militants, stepped in on Monday to provide aid for Pakistanis hit by the worst flooding in memory, piling pressure on a government criticized for its response to the disaster that has so far killed more than 1,000 people. The floods that ravaged the northwest and displaced more than a million people are testing an administration heavily dependent on foreign aid and which has a poor record in crisis management — whether fighting Taliban …