TEL AVIV, Israel — Israel’s decision to revoke the licenses of more than three dozen humanitarian organizations this week has aid groups scrambling to grapple with what this means for their operations in Gaza and their ability to help tens of thousands of struggling Palestinians. The 37 groups represent some of the most prominent of the more than 100 independent nongovernmental organizations working in Gaza, alongside United Nations agencies. Those banned include Doctors Without Borders, the Norwegian Refugee Council, Oxfam and Medical Aid for Palestinians. The groups do everything from providing tents and water to supporting clinics and medical facilities. The overall impact, however, remains unclear. The most immediate impact of the license revocation is that Israel will no longer allow the groups to bring supplies into the Gaza Strip or send international staffers into the territory. Israel says all suspended groups have to halt their operations by March 1. Some groups have already been barred from bringing in aid. The Norwegian Refugee Council, for example, said it has not been a