Gen. Martin Dempsey arrives Thursday, Jan. 19, for his first visit to Israel as Chairman of the Joint US Chiefs of Staff amid a major falling-out between the two governments over the handling of Iran's nuclear weapon potential. DEBKAfile's military and Washington sources confirm that Prime Minister Benjamin Netanyahu stands by the view that Iran is advancing its plans to build a nuclear bomb full speed ahead, undeterred even by the threat of harsher sanctions. Netanyahu therefore stands by his refusal of President Barack Obama's demand for a commitment to abstain from a unilateral strike on Iran's nuclear sites without prior notice to Washington.
The US president repeated this demand when he called the Israeli prime minister Thursday night Jan. 13. Netanyahu replied that, in view of their disagreement on this point, he preferred to cancel the biggest US-Israel war game ever staged due to have taken place in April. The exercise was to have tested the level of coordination between the two armies in missile defense for the contingency of a war with Iran or a regional conflict.
     

     Much more in the entire piece , however it this article is accurate , the first take away is an attack unilaterally by Israel is likely to come sooner rather than later.