Iran's top negotiator says US 'lacks will to fulfill its commitments' after Israeli hit on Beirut Iran's top negotiator, Mohammad Baqer Qalibaf, said that Israel's assault on Beirut's southern suburbs showed that the US "either lacks the will to fulfill its commitments or the ability to do so". "If you lack the will and ability to fulfill your commitments, speaking of continuing the path is not possible," he added.