German Defence Minister Annegret Kramp-Karrenbauer on Wednesday warned the United States was facing a "very explosive situation" and a possible systemic crisis after President Donald Trump prematurely declared election victory. Following Trump's remarks that he will go to the Supreme Court to stop ballots from being tallied, Kramp-Karrenbauer told public broadcaster ZDF "this election has not been decided... votes are still being counted". She said Trump could create "a constitutional crisis in the USA". bur-dlc/hmn/bp