Columbia University announced Wednesday it has extended negotiations with pro-Palestinian protesters to clear their encampments on the school’s lawn before further action against them is taken. The original deadline for protesters to leave was Tuesday at midnight or else police may have stepped in to dismantle the encampment. But the university said due to significant progress made in negotiations with student leaders, the school has given another 48 hour extension to the deadline. Columbia said the organizers agreed to dismantle a “significant number of tents,” ensure only those affiliated with the school are taking part in the protest, and that...