Modern warfare requires a new approach. No troop movements do not necesarily mean the belligerents are not planning on war. In an age of high tech weaponry where push buttons in a secure room is the method, war can still be unleashed on the unprepared by the push-button method of surprised offensive. Hence, the tank battles of 30+ years ago may not arise as push-button missiles would be the preferred weapons of modern war. Israel will do well coming with counter measures to this challenge.
Russian defense ministry: Plane sent to intercept U.S. plane near border on Friday (Reuters)
from the article: MI: Syria increases military activity for fear of an Israeli attack