U.S. Ambassador to Syria: "Americans can't fix this problem" (CBS News) International leaders are convening in Paris on Tuesday to discuss the ongoing civil war in Syria. The meeting comes as the White House announced an additional $155 million in humanitarian aid to the Syrian people. CBS News foreign correspondent Clarissa Ward spoke to U.S. Ambassador to Syria, Robert Ford, one of the representatives of more than 50 nations included in the meeting. Ford remains adamant that the U.S. will not intervene directly in Syria, even if the conflict continues for months. I don't know how long it will take. We obviously deeply regret the violence that this regime has inflicted on its people," Ford said, before adding, "We're isolating the regime we're weakening the regime, we're working to set the opposition up." The latest aid authorization brings the total U.S. aid over two years to $365 million. Ford praised the Syrian people, telling Ward, "I've worked in the Middle East for 30 years and I don't think I've ever seen people as courageous." However, he stopped short of committing Americans to quelling the unrest in the long-term, saying that that ultimately the violence is a national issue. We have to let these societies find their own ways forward. The Americans can't fix this problem. Syrians have to fix this problem. For more from Ward's interview with Ambassador Ford, watch the interview above.