The dispute between the Obama administration and Israeli government regarding Netanyahu's Washington D.C. visit has escalated further as a senior U.S. official has harshly criticized Israeli ambassador Ron Dermer for his stance.Speaking to the New York Times, the official said that Dermer puts Netanyahu's political interests above relations between Israel and the United States.The dispute erupted as Israeli Prime Minister Netanyahu was invited to speak at the U.S. Congress by House Speaker John Boehner without the knowledge of the White House. The move is considered a political show-off for both parties, one that mixes foreign relations with domestic politics. Ambassador Dermer was criticized by both the Obama administration and Israeli opposition for his involvement in this invitation.In his response to the New York Times, Dermer said he had acted with Israel's best interests and thought that Speaker Boehner would inform the administration.