In the Islamic world deals with Israel are akin to making deals with the Satan. Iran is trying to paint Turkey as a collaborator with Israel and anti-Islamic. Turkey may or may not follow through with the gas deal, but Iran is not a consideration to them, energy is.
Nasrallah may opt for confrontation against Israel in the form of infiltrating the North His operative capabilities have been smashed by ISIS and while it is true that he possesses lots of missiles direct conflict will bring him ruin.
The real story behind this is the strategic leverage Iran loses with Russia. Russia wanted to use Iran as its ground army, without it, Iran has little value for Russia other than keeping quiet.