Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. US Defense Officials Briefing Senators on Niger Attack by Ken Bredemeier U.S. defense officials are briefing the Senate Armed Services Committee on Thursday about the Islamic State ambush attack in Niger earlier this month that killed four American soldiers. Robert Karem, the Pentagon's assistant secretary for international security affairs, and Air Force Major General Albert Elton, the deputy director for special operations and counterterrorism, are set to talk about the October 4 firefight in a closed-door session. Defense Department officials are in the midst of an investigation of the attack that occurred near the Niger-Mali border and took the lives of the four servicemen, all U.S. Special Forces troops. Even as details remain murky of how the attack unfolded, several key lawmakers have voiced surprise that the U.S. has had about 1,000 troops in the West African nation, and said they are uncertain what the troops' mission is. President Donald Trump said Wednesday he did not specifically authorize the Niger mission. "But I have generals that are great generals -- these are great fighters, these are warriors," he said. "I gave them authority to do what's right so that we win. That's the authority they have. I want to win and we're going to win." Trump has been embroiled in days of contentious public statements about his condolence call to the widow of one of the soldiers killed, Sergeant La David Johnson. The widow, Myeshia Johnson, pregnant with her third child, told ABC News earlier this week that Trump's call to her only made her cry more because she heard him "stumbling trying to remember my husband's name. "That's what hurt me the most because if my husband is out there fighting for our country, and if he risks his life for our country, why can't you remember his name? And that one made me upset and cry even more because my husband was an awesome soldier." She said that Trump told her that her husband "knew what he signed up for [in joining the military] but it hurts anyway. It made me cry. I was angry at the tone of his voice." Trump has disputed her account, saying, "I certainly respect La David, who I, by the way, called La David right from the beginning. Just so you understand, they put a chart in front -- 'La David,' it says 'La David Johnson.' So I called right from the beginning. "I was extremely nice to her," Trump said. "She sounds like a lovely lady. I've never seen her, I've never met her, but she sounds like a lovely lady. But I was extremely nice to her, I was extremely courteous, as I was to everyone else."