Unless you get written permission from the producers of other shows to use their footage in your own video, your only hope is to claim fair use. However, fair use can only be determined if you are taken to court, in which case the court decides whether your argument of fair use is valid or not. And YouTube's only policies routinely ignore fair-use claims, as does its extralegal Content ID system.

In order to successfully use a fair-use defense (and assuming you get past YouTube's fair-use-unfriendly policies), you would need to create videos that are heavy on your own content and extremely light on the "borrowed" news program content, and your use would have to fall into one of the fair-use categories, such as criticism or review. See this page for some examples of likely cases of fair use:

http://www.centerforsocialmedia.org/fair-use/related-materials/codes/code-best-practices-fair-use-online-video

You may wish to get an opinion from a lawyer on this, if budget permits, but even a favorable opinion from a lawyer doesn't mean that you'll be able to use news footage without permission. You really never know unless and until it goes to court, and typically YouTube will cut you off unilaterally before that, requiring you to sue if you're serious about it.