As in Israel's 1981 attack on Iraq's Osirak nuclear reactor, everyone but the Israelis had decided that they didn't have the range to reach the target.
There is no good military option. But keep in mind if things get out of hand, you'll have as many as a half-million personnel at your disposal (Israel+Iraq+US).
But if the good guys don't screw things up again, one month from today, regime change in Syria will be imminent, if it doesn't happen before then. Syria first, then Iran. That is the proper way. Which is the #1 reason why we went to war in Iraq in the first place.