White House spokesman Josh Earnest said Mr. Obama will discuss the key issues that explain why the accord deserves widespread support, and why Congress should back the international effort. Many lawmakers say they need to be convinced the Iran are going to adhere to the deal. ____________________________________________________________________ From the VOA news center in Washington, this is Joe Palka. That's the latest Wolrd news from VOA. 白宫发言人乔`厄内斯特表示总统奥巴马将就关键问题进行讨论,解释为什么这项协议获得了广泛支持,为什么国会应该支持各国努力得来的成果.许多议员表示需要确信伊朗会遵守协议内容. _____________________________________________________________________ 乔帕卡,在华盛顿美国之音新闻中心为您报道. 以上就是美国之音最新全球新闻报道.