* Operation follows Taliban attacks across country
* PM Sharif cancels trip to Davos to handle security
* Residents say many civilians killed, no official comment (Adds Taliban statement, details on death toll)
By Jibran Ahmad and Saud Mehsud
PESHAWAR/DERA ISMAIL KHAN, Pakistan, Jan 21 (Reuters) - Pakistan fighter jets bombed suspected Taliban hideouts in a tribal area on the Afghan ...