Israel expands its campaign against militancy in the Palestinian territory after more than 15 months of deadly war in Gaza.

In the days since a fragile ceasefire took hold in the Gaza Strip, Israel has launched a major military operation in the occupied West Bank and suspected Jewish settlers have rampaged through two Palestinian towns.

Israel's defence minister said on Tuesday forces were applying lessons learned in Gaza as a major operation continued in Jenin which the military said was aimed at countering Iranian-backed militant groups in the volatile West Bank city.