"Israel is not bound by this deal with Iran because Iran continues to seek our destruction," he said. "We will always defend ourselves."
Yoaz Hendel, a former Netanyahu spokesman, said Tuesday's deal marked a "big failure" for his former boss. But he said some of the criticism was unfair, saying the U.S. had acted to protect its own interests and even at times of warm relations, past prime ministers have lost important diplomatic battles with American presidents.
"I'm not sure a personal relationship and personal feelings would change anything," he said.