When the ceasefire between Israel and Hamas ended on Dec. 1, some 1.8 million Gazans had been displaced by the war — about 80% of Gaza’s population.

Many fled from northern to southern Gaza after Israel issued a warning about military operations in the north. Last week, Israel began a ground offensive into southern Gaza, disturbing what safety residents of Gaza had left and compounding a dire humanitarian crisis.

Many have blamed Israel for not following international law regarding forced displacement of civilians. However, international law is part of the problem.