Nevertheless, some differences can be seen based on the Obama administration's handling of relations with certain countries. For example, Israel and the . have always been strong allies. But relations between Obama and Israeli Prime Minister Benjamin Netanyahu have been tense. A major contributor to this tension has been the Obama administration's Iran policy. The . tightened sanctions on Iran in Obama's first term, but negotiated a deal in the second term that allowed international inspections of Iranian nuclear facilities. The . and Iran also found common ground against the threat from ISIS. This rapprochement has irked Iran's traditional rival Israel, even though for all practical purposes Israel and the . remain staunch allies. Republicans in Congress opposed the Iran deal and the easing of sanctions against Iran. They also invited Netanyahu to deliver a speech against the deal.