The "iflng" Tag from the core system allows only normal text to be included. If you want to use different insert-tags for different laguages it's getting complicated.
This extension allows to add a normal text OR another insert-tag depending of the shown language. So it's possible to show different images for different countries.

Example:

Text: {?{lnginsert::de?lngtext=Welcome}}

Insert-Tag 1: {?{lnginsert::en?tagname=date&tagparam=m-d-Y H:i}}
Insert-Tag 2: {?{lnginsert::de?tagname=image&tagparam=tl_files/music_academy/campus/campus_building.jpg&alt=A campus building&width=200&rel=lightbox}}

Download and detailed description can be found in the repository.

Any problems or bugs should be reportet in this topic.

Felix