Jake Sullivan stressed that deterrence is an important element of the kind of diplomacy needed to bring security to north.
There has been no order preventing Barnea or the Mossad from returning to Qatar to restart hostage negotiations.
Jake Sullivan and Mahmoud Abbas will reportedly discuss "ongoing efforts to revamp and revitalize" the Palestinian Authority and holding "extremist" settlers accountable for violence.
The comments come as US National Security Adviser Jake Sullivan visits Israel during his latest trip to the Middle East.