U.S. national security adviser confirms "understanding" with Israel on truce plan.

Israel's war cabinet discussed the proposal last night, and Israeli media said today that it gave its tacit approval. Israel is developing plans to expand its offensive to Rafah, Gaza's southernmost city on the border with Egypt. More than half of the territory's population of 2.3 million has sought refuge in the south and center of the Gaza Strip since the start of the war in October. The U.N. and humanitarian organizations have warned of a catastrophe if Israel launches a ground attack.