He is not an Israeli, so he can’t be a traitor to them. What he is, is the most recent in a long line of Jewish Democrat politicians who cannot grasp the fundamental hostility to Israel within a significant portion of the Democrat Party.
Secretary Kerry has an upper class disdain for Israel that is part classic upper crust anti-Semitism and part Ivy League unwillingness to understand the absolute hostility to Israel’s existence that Arab leaders have stoked in order to mask their own failures.
The odd part of this whole thing is that on the practical level, Arab governments such as Egypt, Jordan, and the Saudis are cooperating with Israel against both ISIL/ISIS and Iran. Two separate movements that want both the Israelis and these governments destroyed.
Of course the Arab governments will never admit this, but their official hostility masks a mutual need for a strong Israel. Israel and its conventional military power (and officially non-existent nuclear umbrella) protects them from external attack and deters Syria and Iran. Israel understands that the officially hostile governments in Egypt, Saudi Arabia, and particularly Jordan actually protect Israel’s flanks and allow it to focus on the threats from Iran (including Hezbollah in Lebanon), and the chronic trouble in the West Bank and Gaza.
astute observations.