By Jeremy Diamond, CNN
Lebanese president Joseph Aoun.
Analysis - From Washington to Tehran, all eyes are on Lebanon.
That's because the future of the Iran war - and the prospects for a deal to end it - could now hinge on what happens in Lebanon, where a secondary front in this regional war is taking centre stage. That new reality is the result of Iran's relentless efforts to link the fate of both conflicts, and of the increasingly diverging priorities of the United States president and the Israeli prime minister.
The 12-hour exchange of fire between Israel and Iran had barely ended on Monday (local time) when Lebanon's key role was brought to the fore once again.
