It is true that many liberty loving Congressmen have a more guarded attitude towards getting the United States involved in wars that we really have no business getting involved in.  I wouldn't necessarily call them "isolationists".  The Founding Fathers never encouraged our country to become the world's police as we have become.  They limited the powers and decisions to go to war in order to prevent our country from becoming involved in territorial issues that in no way affected or interfered with our national security or safety.  Unfortunately, time and time again, many Presidents have taken us to wars with little if no respect to those limitations. Many Americans feel that our country should not get involved in wars or territorial issues without following the steps clearly defined in our Constitution.  It does not make any of us "isolationists"

With that said, there is no argument that Israel is the only ally we have in the Middle East.  That has been reality for decades.  The Middle East has become a hot spot where now most of our enemies find cover.  Without a doubt, it is in the United States' foreign interest, as well as for our national security that we not only stand side by side with Israel, but that we break all forms of "diplomatic talks" with rogue states in the region whose only goal is to destroy both Israel and the United States.

Wars are  no longer as easily defined as they were in the '20s, '40s, or even the '80s.  Perhaps Congress should consider re-assessing the definition of "war" in order to more clearly show the circumstances under which our national security as well as our allies' safety and security are being threatened.