Barry Eichengreen agrees with Ken Rogoff:

The dollar’s strength reflects the knee-jerk reaction of investors rushing into US treasuries as a safe haven. It is worth remembering that the same thing happened in August 2007, when the sub-prime crisis erupted. But once investors realized the extent of US financial problems, the rush into treasuries subsided, and the dollar resumed its decline. Now, as investors recall the extent of US financial problems, we will again see the dollar resume its decline.

Hat tip to Thoma.