By Raneen Sawafta and James Mackenzie JENIN, West Bank/JERUSALEM (Reuters) -Israel sent tanks into the occupied West Bank for the first time in more than 20 years on Sunday as it ordered the military to prepare for an "extended stay" to fight Palestinian militant groups in the area's refugee camps.

Israel launched a major military incursion in the northern West Bank in August, which it called “Operation Summer Camps.” It sent armored vehicles into the cities of Jenin and Tulkarem, severing water and electricity and leading Palestinians to ration food, residents told CNN.

Tanks sit outside Jenin refugee camp a day after Israel sent them into the West Bank:::: Jenin, West Bank Prime Minister Benjamin Netanyahu instructed the military to carry out an "intensive" operation in the West Bank following explosions on buses close to Tel Aviv on Thursday (February 20),