Citizens of Israel should be Israel first. I would not think to deny them that.
The US should be America First and it would be wrong to put the needs and wants of Israel above that of the safety and well being of American citizens.
There is no reason for us to be subject to what Netanyahu dictates.
Levin is pointing out that (a) Iran’s nukes is a matter FIRST to Israel more to any other nation and in that less to U.S., except in as much as the U.S. considers Israel a friend and ally in the region; and therefor (b) U.S. policy cannot fail to understand that failure to prevent Iran from acquiring nuclear weapons poses an existential threat to Israel - NOT the U.S.