The United States under President Donald Trump has adopted an ambiguous position on European security. Although no immediate risk of abandonment is apparent, European countries are rethinking their defence strategies in case the US declines to support them, or provides only partial support, in a...

According to the US government, the Russian government is developing a programme to arm some of its satellites with nuclear warheads. Should the Kremlin acquire this capability, it could destroy key parts of the civilian satellite infrastructure by detonating a single nuclear weapon in low Earth...

In recent months, there has been an intensifying debate over whether Europe can still rely on US extended nuclear deterrence or should begin to consider alternatives that are independent of Washington. A binary approach - trust or no trust - is of limited analytical value here; the subject matter...

While a second Trump Presidency would be challenging for transatlantic ties, US nuclear assurances to its NATO allies in Europe would likely be the last casualty - not the first - of a fraying relationship. There is an intrinsic incompatibility between the United States completely abandoning its...

The threat of the use of nuclear weapons by the aggressor is a significant factor in the ongoing war. Also in future, the Ukrainian government (any leadership) will be interested in its own nuclear weapons at least as long as Russia is ruled by an ill-predictable authoritarian regime. Nuclear...