Even if his boss is tied up with the fallout over his tweeting, Tillerson's head needs to be here, big time. As it was for Sykes, Picot and Balfour, this is a time for bold ambition, not to draw new lines, but to deftly manage the erasure of old ones. This is no time for US to be eying ISIS's demise in Raqqa and thinking of leaving the battlefield. No time for Trump to be anything other than laser-focused on US's future interests.