Dollar's breach of previous resistance at 87.54 due to active cross selling in yen signals the upmove from last week's low at 84.82 has resumed and upside bias is seen for correction of recent decline to 88.20/30 and possibly 88.60 before retreat due to loss of upward momentum.  
On the downside, below support at 86.98 (yesterday's New York low) would indicate a temporary top has been formed instead and bring retracement towards 86.52.