He joined the BBC as a graduate trainee in 1982. During his 23-year career in broadcasting, he covered all the following roles: producer, studio manager, reporter, correspondent and anchor.
On 27 July 2014 Gunness was interviewed by David Gregory on Meet the Press, where Gregory played a video on the screen showing what appeared to be a rocket being fired from a school in Gaza. Only the viewers could see the video and not Gunness, who was appearing via satellite from Tel Aviv. Gregory asked "the Israeli government has released video tape within the last hour, it was posted on YouTube. NBC News has not independently verified the Israeli's claim. I realize you cannot see this video, but our audience can. And I'm going to describe it to you, that purports to show rockets being fired from a UN school. Is this accurate?" Gunness, unable to see the video while being accused of complicity in the firing of rockets replied, "Look, to be fair to me, to bring me on a live program and expect me to comment live on air on pictures I haven't actually seen, I think anyone looking at this program would agree that that's really unfair. I mean, if I can see it, I'll happily comment on it. But can I make the point that we have said that all sides have to respect the inviolability of UN compounds. And that's both side. So if it is what you say it is, we would strongly condemn it. And we're a humanitarian organization. We're not an organization with an army. We have moral force. We have the force of international law. And we have the principles of humanitarianism to protect us. But that's it." Gregory then abruptly ended the interview, but towards the end of the program, he revisited the topic with a new statement in an attempt to reverse the perception of bias during the interview. He issued an "endnote to an earlier conversation about Gaza, we asked as you will recall, a UN spokesman about this video, which Israel claims, Israel claims showed rockets being fired by Hamas from a UN school in Gaza. This is shot by the Israeli government, and that's their claim. The UN has reviewed it, tells us that they have confirmed in their view the video does not show rockets being fired from a UN administrative school in Gaza." Gregory was widely criticised for his interview tactics during the show.
Al Jazeera Interview
On 30 July 2014, immediately following a live TV interview from his office in Jerusalem with al Jazeera discussing the killing of children who died from Israeli shelling while sleeping in the relative safety of a UN school in Gaza, Gunness broke down in tears. The video of the UN spokesperson in tears immediately went viral and was written about extensively.
