Hezbollah leader Sayyed Hassan Nasrallah has vowed that his movement would continue its military support for Syria's President Bashar al-Assad after its fighters spearheaded the recapture of the strategic town of Qusair last week.
"Wherever we need to be, we will be. What we started taking responsibility for, we will continue to be responsible for, and there is no need to give details," he said in a televised speech.
US President Barack Obama has tip-toed over the 'red-line' and armed Syrian rebels but it is a gamble of huge proportions.
Writing for ITV News, international affairs analyst David Butter looks at the timing of US support for Syria and when it may arrive.
Are the US supplied assault rifles too little, too late and what incentive is there for Assad to enter peace talks?