Netanyahu to deliver landmark Congress speech amid soaring tensions with Biden Israeli Prime Minister Binyamin Netanyahu is slated to deliver a landmark speech in Congress on Wednesday in which he is expected to seek support and attempt to regain credibility, both from Washington and back home. Israel's ties with the US, its main military backer and strongest ally, have been fraught with escalating tensions as the country intensifies its attack on Gaza. Facing a wave of protests upon his arrival, Netanyahu is the first foreign leader to address Congress four times.