Seems exactly on the same side to me- Netanyahu was the one that pushed most for the US invasion of Iraq:

"Minister Benjamin Netanyahu of Israel [...] also visited Washington in late 2002 to lobby for the invasion of Iraq.

Apparently referring to testimony on the Middle East that Mr. Netanyahu delivered to Congress on Sept. 12, 2002, when he was a private citizen, Mr. Kerry told the House Foreign Affairs Committee, “The prime minister, as you will recall, was profoundly forward-leaning and outspoken about the importance of invading Iraq under George W. Bush, and we all know what happened with that decision.”

Video of Mr. Netanyahu’s 2002 remarks — in which he said “I think the choice of Iraq is a good choice, it’s the right choice”

https://www.nytimes.com/2015/02/26/world/middleeast/kerry-re...