Abbas is only required to recognize that Israel Is A State, and with that recognition he is acknowledging Israel's right to define itself in any way that it wants. And once Israel does that (has it ever actually done that?) then the only valid response from Abbas is "it's nothing to do with me" precisely because - du'oh! - that's a decision for the Israelis alone...... and he isn't an Israeli.
Two mortar shells explode in Golan Heights, no casualties or damage reported (Haaretz)