Senior Israeli official tells WSJ country can target Iran's underground Fordow nuclear site on its own.

This goal finds clear justification in international law, anchored firmly in doctrines such as “extended self-defense” and the UN-sanctioned Responsibility to Protect (R2P).

The ultimatum reportedly comes with a deadline of just a few days, with a warning that if Iran does not comply, the United States will continue to support Israel and ensure the destruction of nuclear facilities, particularly Fordow.

US official expresses concern over Israel's capacity to defend against ballistic attacks as Pentagon deploys additional assets.