BEIRUT (Reuters) - The U.S. envoy to Lebanon said on Monday that Lebanese Christian politician Gebran Bassil, who has been sanctioned by the United States, had voiced willingness to sever ties with Hezbollah, challenging his assertion that he rejected the idea outright.Washington on Friday blacklisted Bassil, son-in-law of Lebanon’s president and leader of its biggest Christian bloc, over charges of corruption and ties with the Iran-backed Shi’ite Hezbollah, which Washington deems a terrorist group. Bassil slammed the sanctions as unjust and politically motivated, saying they were imposed after he refused to submit to a U.S. demand to break ties with Hezbollah as that would risk Lebanon’s national unity and peace. U.S. Ambassador Dorothy Shea said in a video aired by local broadcasters that Bassil, in exchanges with her, had “expressed willingness to break with Hezbollah, on certain conditions.