Five things we learned from our reporting on the US’s pro-Israel lobby

The Guardian followed key congressional races affected by Aipac and similar groups for the past few months

The progressive US representative Ilhan Omar of Minnesota easily overcame a primary challenge on Tuesday, delivering a major victory for progressives after a primary season marked by mixed success amid an onslaught of spending from pro-Israel lobby groups.

The progressive Squad" in the House were early to embrace calls for a ceasefire in Gaza and criticize Israel's offensive for its toll on civilians, drawing the ire of groups like the American Israel Public Affairs Committee (Aipac). Omar and Summer Lee of Pennsylvania were still able to easily cruise to victory in their primaries, but pro-Israel groups successfully picked off its two biggest Squad targets of this primary season: Jamaal Bowman of New York and Cori Bush of Missouri.