<h2>{{ entry.title }}</h2>
<span>{{ dateFormat entry.publishedDate }}</span>
<p>
    {{{ entry.content }}}
</p>
<p>
    <a href="{{ entry.link }}">Read the full article.</a>
</p>

<h2>{{ entry.title }}</h2>
<span>{{ dateFormat entry.publishedDate }}</span>
<p>
    {{{ entry.content }}}
</p>
<p>
    <a target="_blank" href="{{ entry.link }}">Read the full article.</a>
</p>

Set target _blank on the external link
Set target _blank on the external link
