The staffer was found to have used his prior knowledge of the president's speeches to place lucrative bets.

The drugs have a delayed effect which "increases the risk of overdose", the health institute says.

Anne Lindboe, the mayor of Norway's capital, had planned to marry her fiance on Friday.

But they say Moscow will likely continue its "hybrid activity" against Nato members, short of direct military action.

Researchers in fields like climate and medicine are being lured north by new research funding.

Kai Wegner says the German capital and city-state would not cave in to a ransom demand for data stolen in a cyber-attack.