The sad fact is that, no matter how much sense this might make, the US would certainly veto any such move:
As the conflict escalates between Israel and Palestinian armed groups in Gaza, Amnesty International is calling for an international arms embargo and for the immediate deployment of international monitors.
Since 14 November, dozens of civilians in Gaza and three Israeli civilians have been killed. Both sides have been violating international humanitarian law, according to information gathered by the UN, local human rights organizations and Amnesty International.
“International monitors with the ability to investigate human rights violations and violations of international humanitarian law need to be on the ground as soon as possible in both Gaza and Israel to carry out independent, impartial assessments of violations by both sides,” said Ann Harrison, Amnesty International’s Middle East and North Africa Deputy Director.
“The UN Security Council should meet urgently to impose an international arms embargo on Israel, Hamas, and Palestinian armed groups in Gaza.”
Pending such an embargo, all states should immediately suspend transfers of weapons, munitions and related equipment to Israel, the Hamas de facto administration, and Palestinian armed groups in Gaza.
Amnesty notes that both sides are unlawfully attacking civilians and that no-one at all has acted upon the Goldstone Report from the 2008/09 war which gave clear indication that individuals on both sides had comitted war crimes.
Amnesty International has called repeatedly for the UN General Assembly to refer the Fact-Finding Mission’s report, known as the “Goldstone report” to the Security Council so that it could consider referring that situation to the Prosecutor of the International Criminal Court to investigate war crimes by both sides.
Again, that should happen – but won’t.