This article from Pajamas Media hints at why the Persian régime may desire to pursue war. But the recent news indicates that war may indeed may be on the cards.
On 29 July, there was a Grad missile sent to hit Ashqelon. The very next couple of days brought further mortar attacks on the Negev as Arab terrorists "vowed vengeance" for the death of one of their leaders in a retaliatory raid. In addition, a Qassam rocket hit an empty school building in S'derot.
Monday, 2 August, also brought more Grad rockets launched at Israel, this time at the tourist center of Eilat. It turned out that the rocket that did the real damage overflew Israel and hit and killed one, while wounding several others in Aqaba, Jordan. There is much disputation over whether Grads were launched from the Sinai; such an admission will cause the Egyptians considerable embarrassment.
All this was merely an hors d'oevres to the violence that broke out this afternoon. I was alerted to this by a soldier with whom I keep in regular touch, who keeps her laptop tuned to al-Jazeera. She sent me this link to Lebanese soldiers attacking an Israeli position on our northern border. Several were killed in the fighting that ensued, one Israeli soldier and three Lebanese. Right now sabres are being rattled, but it pays to peek at the Persians, who really control Lebanon, for a clue to what's actually happening.
The régime in Tehran, crumbling under a number of internal pressures, might seek to go to war with Israel to distract a disgruntled citizenry. Since HizbAllah has plans to invade, it would be better to attack Israel in the dry season, when rain does not bring mud to slog through.