Recognizing Syria's right to play a role in Lebanese affairs in the context of a peace treaty, as opposed to having a vacuum of power in Lebanon and leaving Hezbollah and Iran on our northern border and at war with us for another generation, obviously would improve our security. Syria is still the epicenter of the Gordian knot- they enable the arming of Hamas and Hezbollah. Let Syria into the Arab fold and out of its alliance with Iran. Right now, Israel and the Sunni Arab states share the strategic interest of containing the ambitions of Iran, and the "moderate" Arabs want a treaty with Israel. Take away the arms that come through Syria and our enemies Hamas and Hezbollah will have precious little left to them.
Israeli forces demolish illegal houses, power infrastructure in Palestinian village Aqaba (Haaretz)
from the article: Washington: There is no place yet for Syria in peace process