Nine Palestinians were killed when troops reportedly encircled buildings amid a storm of gunfire, grenades and tear gas in the packed urban camp.
Palestinian officials say two of the dead were civilians, including a 61-year-old woman, while militant groups claim the other seven as members.
The Israeli military says its troops went in to arrest Islamic Jihad militants planning “major attacks”.
The history matters here. I have been to Jenin repeatedly over the last year as Israel’s military raids have mounted, sparking increasingly fierce gunfights with a new generation of armed Palestinians.
Everyone you speak to roots their experiences in comparisons to April 2002, at the height of the second intifada or Palestinian uprising.
Back then, Israel launched a full-scale incursion – known as the Battle of Jenin – in which at least 52 Palestinian militants and civilians and 23 Israeli soldiers were killed. It had followed a campaign of Palestinian suicide bombings in Israel, many of which involved perpetrators from the city.