How to use  tag in views?
You can use php filter, or install Token Filter module and then enable tokens in filter which you use (admin/config/content/formats). Token for front page is [site:url] so you should write your link like follow: 

&lt;h2&gt;&lt;a href="[site:url]news/[nid]"&gt;[title]&lt;/a&gt;&lt;/h2&gt;