from israel of another strike, and the leader of hezbollah, the iranian-backed terrorist group vowing over the weekend to bring victory to president aassad. calls to take action are reaching fever pitch. senator mccain became the highest ranks u.s. officials to visit syria since the conflict began. he urged the white house to intervene. last night from brute, nbc's richard engel addressed the complexity. >> reporter: there's a growing realization and concern that something must be done. this is what's happening without action. at least 80,000 dead in syria so far, more than a million refugees. iraq is going back to a civil war, lebanon is heading toward a civil contact. almost every day there are funerals for hezbollah fighters. today the rebel free syrian army gave hezbollah 24 hours to leave