The espionage operation was part of a broader campaign by the government of Israeli Prime Minister.
According to The Wall Street Journal, the espionage operation was organized by the Government of Israel, headed by Benjamin Netanyahu.
"One thing is when the US and Israel are spying together. Another, when Israel is stealing US classified information, and then uses it so to undermine the US diplomacy," – says a senior US official to the edition.
"The White house found out about the espionage operations when the US intelligence agencies, spying Israel, intercepted a conversation between Israeli officials," – says the publication.
US official say Israel has been at the top of the list of countries actively spying the United States for a long time. It is on this list close to China, Russia and France.
Distrust between Netanyahu and US President Barack Obama had grown over the years, but deteriorated when the US leader began talks with Iran.
On March 12, the US President Barack Obama informed the leaders of the two chambers of the US Congress about the extension of sanctions against Iran for one year.
It was reported that Republican senators disrupt the President's agreement with Iran.
The White House insists that the President does not need the approval of the Congress to make a deal with Iran, and that the legislative body cannot change the terms of the agreements.
Earlier, the Iranian Foreign Minister Mohammad Javad Zarif rejected the proposal of President Barack Obama to freeze its nuclear program for a period of 10 years. The official stressed that Tehran would not be exposed to excessive demands of the American side in nuclear negotiations.Source: The Wall Street Journal