The Iran-backed Hezbollah party and its closest allies are set to torpedo an attempt by rivals to elect a senior IMF official as Lebanese president this week, in a tussle that underlines its decisive sway and the dim prospects for reviving the crumbling state. The standoff has laid bare Lebanon's deep splits, with the heavily armed Hezbollah deploying its political might against Jihad Azour's bid to fill the vacant presidency, while continuing to campaign for its ally - Suleiman Franjieh.