From Washington, this is VOA News. President Barack Obama prepares to tell the American people how he will lead a campaign to defeat the Islamic state group. And U.S. lawmakers send mixed messages on what to do about the militants ahead of Mr. Obama's speech. I'm Michael Lipin reporting from Washington. In about three hours from now, U.S. President Barack Obama is due to present a plan for a U.S.-led military effort against Islamic State militants in the Mideast. ____________________ VOA新闻,华盛顿播报. 美国总统巴拉克`奥巴马预备告知美国民众他将如何领导行动以击败伊斯兰国组织. 在奥巴马总统发表演讲之前,美国众立法委员就如何对抗武装分子发表了诸多混杂信息. 我是迈克尔`李平,华盛顿报道. 从现在起大约三小时后,美国总统巴拉克`奥巴马将对关于美国领导军事力量对抗中东地区伊斯兰国武装分子的计划进行说明. ____________________