The Snowden disclosures revealed that the US was regularly spying on Germany, France, Italy, Spain, Japan, South Korea, Brazil, Mexico, the EU, and the UN. Also of course the CIA was spying on Congress.
One can only imagine that many of these countries were also spying on us in various capacities, albeit with fewer resources. Israel is a bigger concern because they're extremely good at it, but I'm sure it's nothing new.
Yes, espionage is not an act of war and is a regular occurrence, even between allied nations. You can see this clearly during WW2 now that much of the information has been declassified. Great Britain ran an extensive intelligence operation in New York prior to US entry into the war.
How many of those countries openly lobby politicians in USA though?
Ah, the whole, "Everyone does it, why are you picking only us?"
They used to for their warcrimes, genocide, apartheid, and literally every other thing they are guilty of.
From the article:
>While it is commonplace for allies and adversaries across the globe to spy on each other, the current and former U.S. officials said Israel’s recent efforts have gone well beyond what is typical and expected espionage.