JPY review

Western Union notes: 

The yen flirted with one-week lows as ascending U.S. yields weighed, along with upbeat market confidence in a Greek deal for more aid which sapped appetite for lower-yielding, safer plays. Rising U.S. yields often entice the Japanese investor to shift money overseas to reap higher returns. 

Greece isn't out of the woods, however, so any signs of a snag in debt negotiations could quickly reinvigorate market appetite for haven assets like the yen. Europe is trying to clinch a deal for more money for Greece over the coming days.