Only Congress as the power to declare war. Congress has abdicated its duty for a long time now, instead issuing Authorization for Use of Military Force (AUMF) without accepting the full responsibility.
POTUS is now forcing them to resume that duty and responsibility.
Considering how many are dual-citizens, POTUS has put them in the worst position possible
-they support Israel more than the US, therefore Israel's safety is primary
-they all have entanglements with domestic and foreign arms manufacturers and dealers
the spice must flow!
-they counted on the US continuing to give gobs of taxpayer $ to both Israel and other countries
that sweet, sweet foreign aid kickback dough
-they counted on the US to always be there to back up Israel militarily, while it destabilized the region while demonizing other countries
the IDF cries out in pain as it bombs others
-they have already bashed POTUS for wanting to withdraw troops from Syria
-they have already bashed POTUS for not being hard enough on Iran
while they wanted the "Iran deal"
-they and they alone can declare war, but didn't
was find as long as the POTUS kept the status quo
-they now assert that authority
But think about where this puts them, especially with respect to what is going to come out soon…