Ubisoft has released a teaser trailer revealing a few small pieces of information on the Latest Ghost Recon title. The trailer first shows a few locations which seem to indicate fighting in Russia, Norway, and Saudi Arabia.
Another image shows an image highlighting the US aircraft carrier USS Ronald Reagan, one of the newest and most powerful military vessels to date. This may have something to do with air strikes or insertion of the characters into battles. The ship could also possibly act as a home base.
There are also some images of vague weaponry, but it's pretty hard to tell what any of it is. This will all become much clearer once the beta included with Splinter Cell: Conviction is opened up.