Assuming you want the de-DE version to goto 404 page if no news for that language is present, Did you try "Enforce Version Presence - Hide this item if no language version exists [shared]"
Per definition from this post https://kb.sitecore.net/articles/350702
In a multi language solution, you can make sure that an item is only
rendered on a specific language version of the website, if the item
has a version in that particular language.
In Sitecore versions prior to 8.1, default behavior returned empty
untranslated items if the requested item language version did not
exist. This usually manifested in seeing a lot of '$name' macros or
empty pages instead of a real content or Item Not Found page. Handling
this properly required custom code.
Starting from Sitecore 8.1 there is an Enforce Version Presence
feature configurable on the website and on the relevant item or
template Standard Values level which allows to achieve the
aforementioned behavior using the below configuration.
When you enable Enforce Version Presence for an item, an actual
version of the item in the relevant language must be available for it
(in other words, the item has to be translated) to be returned from
the API and displayed on the website. If an item with no versions in
the context language is requested by URL, Sitecore will redirect to
the Item Not Found page if this feature is enabled.
By default, the Enforce Version Presence feature is disabled. You
should enable the feature on the relevant websites and on the relevant
items or template Standard Values.
Follow these steps to enable version presence enforcement on your Sitecore instance:
Enable Enforce Version Presence on the desired sites(*) in Sitecore
This change can be done within any custom include
Enable the feature on items and/or template Standard
Values where you would like to see the feature enabled. The checkbox
field that enables this feature is called Enable Enforce Version
Presence and is placed under Advanced section. If you do not see
the Advanced section, in the ribbon, on the View tab, enable
The value of this field gets inherited as any other
field. This also means you can override this setting on items if