Swedish politicians and defence experts say the country should consider building its own nuclear weapons to deter Russia, as recent drone and airspace incidents raise security fears across Europe.

German and Swedish fighter jets were scrambled to intercept a Russian reconnaissance plane that entered neutral airspace over the Baltic Sea on Sunday morning, officials from Germany and Sweden said.

Sweden will boost military spending by around 40% over the next five years and double the numbers conscripted into the armed forces as it looks to beef up its defence amid growing tensions with Russia ...