<sod >Â  Sigmar Gabriel, who is also Germany's Vice Chancellor, has now said that "in my opinion the negotiations with the US have de facto failed, even though nobody is really admitting it."Â  He noted that in 14 rounds of talks the two sides haven't agreed on a single common chapter out of 27 chapters being discussed.< eod>< sod > Speaking on Sunday, Sigmar Gabriel, who is also Germanyâs economy minister, said:Â âIn my opinion the negotiations with the United States have de facto failed, even though nobody is really admitting it.< eod>