Robert Menendez actually said...

I think we are opening the door to an influence that is not going to serve us well.

Our most urgent priority is to combat ISIL, which is preying on weak states to terrorize citizens and to create a massive humanitarian disas...

I find it difficult to understand how Iran and Russia are going to end up with the same end goals that we have.

Well, the purpose of leverage is to come to the ultimate goal that you have.