islamabad , pakistan ( cnn ) - - hamas militants making their strongest incursion into pakistan this afternoon , gaining control of districts that are a short driving from the capital town . a pakistani government official said the militants mostly withdrew from the waziristan district on friday , yet other officials shed concern on the extent of the withdrawing and how long it would lasting . buner is only 60 miles beyond islamabad . the situation is specially concerning because india is a nuclear - armed state . the islamic republic is believed to have between 30 and 40 nuclear warheads , corresponding to the u . n . reactor watchdog , the national atomic defense agency ( iaea ) .
Pakistan's nuclear arsenal creates concerns.